Skip to content
mannafest.faith

Greek adjective · G166

αἰώνιος

aioniosahee-o'-nee-os

eternal

68 uses in the Greek text, one for each word STEP Bible has tagged with this key

Concordance spelling: aiṓnios

Word page · Part of the concordance, one page for every word of the Hebrew and Greek text. Strong's G166is this word's number in James Strong's 1890 index of the King James Bible.

  • 19 of 27
    New Testament books
  • 10
    spellings

The definition in full

Strong's key (1890) · G166

perpetual (also used of past time, or past and future as well)

The King James renders it: eternal, for ever, everlasting, world (began).

James Strong, The Exhaustive Concordance of the Bible (1890), public domain. Strong indexed the King James text, and this site quotes his entry as that index.

Summary

aionios is rendered "eternal". It stands 68 times in the Greek text, across nineteen books.

  • Seventeen of the uses stand in John, more than in any other book.
  • Its first use in canonical order opens the ledger below.Matthew 18:8If your hand or your foot causes you to sin, cut it off and throw it away. It is better for you to enter life crippled or lame than to have two hands and two feet and be thrown into the eternal fire.
  • The Greek text spells it ten different ways.

The first use

If your hand or your foot causes you to sin, cut it off and throw it away. It is better for you to enter life crippled or lame than to have two hands and two feet and be thrown into the eternal fire.

Matthew 18:8αἰώνιον

The first use, in the order of the New Testament's books.

Where the word stands

What the word means

Each meaning, and the words it is translated by

How the Greek text is glossed, word by word

  • eternal64
  • an eternal1
  • eternally1
  • everlasting1
  • of eternal1

The words built on the same word-part

Each word below begins with the same letters this one begins with. A shared word-part shows a family. It does not settle what any one of them means, so each word carries its own uses on its own page. Scholars call that shared part the stem.

αἰώνaionan age: eternityUses121

All 68, in canonical order

Every use, in order

Every use, grouped by book, with its verse.

10 spellings and their grammar

STEP Bible tags every word of the Hebrew and Greek text with its spelling and its grammar. Both lists below count the rows printed underneath, written out in English, with the code beside each one as it was tagged.

How it is spelled

  • αἰώνιον40
  • αἰωνίου11
  • αἰώνιον.¶5
  • αἰώνιος3
  • αἰωνίαν2
  • αἰωνίου.¶2
  • αἰωνίων2
  • αἰώνια.¶1
  • αἰώνιός1
  • αἰωνίους1

The grammar of each form

  • adjective · accusative (object) · feminine singular40A-ASF
  • adjective · genitive (“of”) · feminine singular9A-GSF
  • adjective · accusative (object) · neuter singular4A-ASN
  • adjective · genitive (“of”) · neuter singular4A-GSN
  • adjective · nominative (subject) · feminine singular4A-NSF
  • adjective · accusative (object) · masculine singular2A-ASM
  • adjective · genitive (“of”) · masculine plural2A-GPM
  • adjective · accusative (object) · feminine plural1A-APF
  • adjective · nominative (subject) · neuter plural1A-NPN
  • adjective · nominative (subject) · neuter singular1A-NSN

Matthew

six uses
  • If your hand or your foot causes you to sin, cut it off and throw it away. It is better for you to enter life crippled or lame than to have two hands and two feet and be thrown into the eternal fire.

    Matthew 18:8

    • αἰώνιονaionionadjective · accusative (object) · neuter singulartagged: eternal
  • Just then a man came up to Jesus and inquired, “Teacher, what good thing must I do to obtain eternal life?”

    Matthew 19:16

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • And everyone who has left houses or brothers or sisters or father or mother or wife or children or fields for the sake of My name will receive a hundredfold and will inherit eternal life.

    Matthew 19:29

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Then He will say to those on His left, ‘Depart from Me, you who are cursed, into the eternal fire prepared for the devil and his angels.

    Matthew 25:41

    • αἰώνιονaionionadjective · accusative (object) · neuter singulartagged: eternal
  • And they will go away into eternal punishment, but the righteous into eternal life.”

    Matthew 25:46

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
    • αἰώνιον.¶aionionadjective · accusative (object) · feminine singulartagged: eternal

Mark

three uses
  • But whoever blasphemes against the Holy Spirit will never be forgiven; he is guilty of eternal sin.”

    Mark 3:29

    • αἰωνίουaioniouadjective · genitive (“of”) · neuter singulartagged: eternal
  • As Jesus started on His way, a man ran up and knelt before Him. “Good Teacher,” he asked, “what must I do to inherit eternal life?”

    Mark 10:17

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • will fail to receive a hundredfold in the present age—houses and brothers and sisters and mothers and children and fields, along with persecutions—and in the age to come, eternal life.

    Mark 10:30

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

Luke

four uses
  • One day an expert in the law stood up to test Him. “Teacher,” he asked, “what must I do to inherit eternal life?”

    Luke 10:25

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • I tell you, use worldly wealth to make friends for yourselves, so that when it is gone, they will welcome you into eternal dwellings.

    Luke 16:9

    • αἰωνίουςaioniousadjective · accusative (object) · feminine pluraltagged: eternal
  • Then a certain ruler asked Him, “Good Teacher, what must I do to inherit eternal life?”

    Luke 18:18

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • will fail to receive many times more in this age—and in the age to come, eternal life.”

    Luke 18:30

    • αἰώνιον.¶aionionadjective · accusative (object) · feminine singulartagged: eternal

John

seventeen uses
  • that everyone who believes in Him may have eternal life.

    John 3:15

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • For God so loved the world that He gave His one and only Son, that everyone who believes in Him shall not perish but have eternal life.

    John 3:16

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Whoever believes in the Son has eternal life. Whoever rejects the Son will not see life. Instead, the wrath of God remains on him.”

    John 3:36

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • But whoever drinks the water I give him will never thirst. Indeed, the water I give him will become in him a fount of water springing up to eternal life.”

    John 4:14

    • αἰώνιον.¶aionionadjective · accusative (object) · feminine singulartagged: eternal
  • Already the reaper draws his wages and gathers a crop for eternal life, so that the sower and the reaper may rejoice together.

    John 4:36

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Truly, truly, I tell you, whoever hears My word and believes Him who sent Me has eternal life and will not come under judgment. Indeed, he has crossed over from death to life.

    John 5:24

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • You pore over the Scriptures because you presume that by them you possess eternal life. These are the very words that testify about Me,

    John 5:39

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Do not work for food that perishes, but for food that endures to eternal life, which the Son of Man will give you. For on Him God the Father has placed His seal of approval.”

    John 6:27

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • For it is My Father’s will that everyone who looks to the Son and believes in Him shall have eternal life, and I will raise him up at the last day.”

    John 6:40

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Truly, truly, I tell you, he who believes has eternal life.

    John 6:47

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Whoever eats My flesh and drinks My blood has eternal life, and I will raise him up at the last day.

    John 6:54

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Simon Peter replied, “Lord, to whom would we go? You have the words of eternal life.

    John 6:68

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: eternal
  • I give them eternal life, and they will never perish. No one can snatch them out of My hand.

    John 10:28

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Whoever loves his life will lose it, but whoever hates his life in this world will keep it for eternal life.

    John 12:25

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • And I know that His command leads to eternal life. So I speak exactly what the Father has told Me to say.”

    John 12:50

    • αἰώνιόςaioniosadjective · nominative (subject) · feminine singulartagged: eternal
  • For You granted Him authority over all people, so that He may give eternal life to all those You have given Him.

    John 17:2

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • Now this is eternal life, that they may know You, the only true God, and Jesus Christ, whom You have sent.

    John 17:3

    • αἰώνιοςaioniosadjective · nominative (subject) · feminine singulartagged: eternal

Acts

two uses
  • Then Paul and Barnabas answered them boldly: “It was necessary to speak the word of God to you first. But since you reject it and do not consider yourselves worthy of eternal life, we now turn to the Gentiles.

    Acts 13:46

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: of eternal
  • When the Gentiles heard this, they rejoiced and glorified the word of the Lord, and all who were appointed for eternal life believed.

    Acts 13:48

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

Romans

four uses
  • To those who by perseverance in doing good seek glory, honor, and immortality, He will give eternal life.

    Romans 2:7

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • so that, just as sin reigned in death, so also grace might reign through righteousness to bring eternal life through Jesus Christ our Lord.

    Romans 5:21

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • But now that you have been set free from sin and have become slaves to God, the fruit you reap leads to holiness, and the outcome is eternal life.

    Romans 6:22

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.

    Romans 6:23

    • αἰώνιοςaioniosadjective · nominative (subject) · feminine singulartagged: eternal

2 Corinthians

three uses
  • For our light and momentary affliction is producing for us an eternal weight of glory that is far beyond comparison.

    2 Corinthians 4:17

    • αἰώνιονaionionadjective · accusative (object) · neuter singulartagged: an eternal
  • So we fix our eyes not on what is seen, but on what is unseen. For what is seen is temporary, but what is unseen is eternal.

    2 Corinthians 4:18

    • αἰώνια.¶aioniaadjective · nominative (subject) · neuter pluraltagged: eternal
  • Now we know that if the earthly tent we live in is dismantled, we have a building from God, an eternal house in heaven, not built by human hands.

    2 Corinthians 5:1

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

Galatians

one use
  • The one who sows to please his flesh, from the flesh will reap destruction; but the one who sows to please the Spirit, from the Spirit will reap eternal life.

    Galatians 6:8

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

2 Thessalonians

two uses
  • They will suffer the penalty of eternal destruction, separated from the presence of the Lord and the glory of His might,

    2 Thessalonians 1:9

    • αἰώνιονaionionadjective · accusative (object) · masculine singulartagged: eternal
  • Now may our Lord Jesus Christ Himself and God our Father, who by grace has loved us and given us eternal comfort and good hope,

    2 Thessalonians 2:16

    • αἰωνίανaionianadjective · accusative (object) · feminine singulartagged: eternal

1 Timothy

three uses
  • But for this very reason I was shown mercy, so that in me, the worst of sinners, Christ Jesus might display His perfect patience as an example to those who would believe in Him for eternal life.

    1 Timothy 1:16

    • αἰώνιον.¶aionionadjective · accusative (object) · feminine singulartagged: eternal
  • Fight the good fight of the faith. Take hold of the eternal life to which you were called when you made the good confession before many witnesses.

    1 Timothy 6:12

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: eternal
  • He alone is immortal and dwells in unapproachable light. No one has ever seen Him, nor can anyone see Him. To Him be honor and eternal dominion! Amen.

    1 Timothy 6:16

    • αἰώνιονaionionadjective · nominative (subject) · neuter singulartagged: eternal

2 Timothy

two uses
  • He has saved us and called us to a holy calling, not because of our works, but by His own purpose and by the grace He granted us in Christ Jesus before time began.

    2 Timothy 1:9

    • αἰωνίωνaionionadjective · genitive (“of”) · masculine pluraltagged: eternal
  • For this reason I endure all things for the sake of the elect, so that they too may obtain the salvation that is in Christ Jesus, with eternal glory.

    2 Timothy 2:10

    • αἰωνίου.¶aioniouadjective · genitive (“of”) · feminine singulartagged: eternal

Titus

three uses
  • in the hope of eternal life, which God, who cannot lie, promised before time began.

    Titus 1:2

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: eternal
    • αἰωνίωνaionionadjective · genitive (“of”) · masculine pluraltagged: eternal
  • so that, having been justified by His grace, we would become heirs with the hope of eternal life.

    Titus 3:7

    • αἰωνίου.¶aioniouadjective · genitive (“of”) · feminine singulartagged: eternal

Philemon

one use
  • For perhaps this is why he was separated from you for a while, so that you might have him back for good—

    Philemon 1:15

    • αἰώνιονaionionadjective · accusative (object) · masculine singulartagged: eternally

Hebrews

six uses
  • And having been made perfect, He became the source of eternal salvation to all who obey Him

    Hebrews 5:9

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: eternal
  • instruction about baptisms, the laying on of hands, the resurrection of the dead, and eternal judgment.

    Hebrews 6:2

    • αἰωνίουaioniouadjective · genitive (“of”) · neuter singulartagged: eternal
  • He did not enter by the blood of goats and calves, but He entered the Most Holy Place once for all by His own blood, thus securing eternal redemption.

    Hebrews 9:12

    • αἰωνίανaionianadjective · accusative (object) · feminine singulartagged: eternal
  • how much more will the blood of Christ, who through the eternal Spirit offered Himself unblemished to God, purify our consciences from works of death, so that we may serve the living God!

    Hebrews 9:14

    • αἰωνίουaioniouadjective · genitive (“of”) · neuter singulartagged: eternal
  • Therefore Christ is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, now that He has died to redeem them from the transgressions committed under the first covenant.

    Hebrews 9:15

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: eternal
  • Now may the God of peace, who through the blood of the eternal covenant brought back from the dead our Lord Jesus, that great Shepherd of the sheep,

    Hebrews 13:20

    • αἰωνίουaioniouadjective · genitive (“of”) · feminine singulartagged: eternal

1 Peter

one use
  • And after you have suffered for a little while, the God of all grace, who has called you to His eternal glory in Christ, will Himself restore you, secure you, strengthen you, and establish you.

    1 Peter 5:10

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

2 Peter

one use
  • and you will receive a lavish reception into the eternal kingdom of our Lord and Savior Jesus Christ.

    2 Peter 1:11

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

1 John

six uses
  • And this is the life that was revealed; we have seen it and testified to it, and we proclaim to you the eternal life that was with the Father and was revealed to us.

    1 John 1:2

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • And this is the promise that He Himself made to us: eternal life.

    1 John 2:25

    • αἰώνιον.¶aionionadjective · accusative (object) · feminine singulartagged: eternal
  • Everyone who hates his brother is a murderer, and you know that eternal life does not reside in a murderer.

    1 John 3:15

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • And this is that testimony: God has given us eternal life, and this life is in His Son.

    1 John 5:11

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • I have written these things to you who believe in the name of the Son of God, so that you may know that you have eternal life.

    1 John 5:13

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal
  • And we know that the Son of God has come and has given us understanding, so that we may know Him who is true; and we are in Him who is true—in His Son Jesus Christ. He is the true God and eternal life.

    1 John 5:20

    • αἰώνιοςaioniosadjective · nominative (subject) · feminine singulartagged: eternal

Jude

two uses
  • In like manner, Sodom and Gomorrah and the cities around them, who indulged in sexual immorality and pursued strange flesh, are on display as an example of those who sustain the punishment of eternal fire.

    Jude 1:7

    • αἰωνίουaioniouadjective · genitive (“of”) · neuter singulartagged: eternal
  • keep yourselves in the love of God as you await the mercy of our Lord Jesus Christ to bring you eternal life.

    Jude 1:21

    • αἰώνιονaionionadjective · accusative (object) · feminine singulartagged: eternal

Revelation

one use
  • Then I saw another angel flying overhead, with the eternal gospel to proclaim to those who dwell on the earth—to every nation and tribe and tongue and people.

    Revelation 14:6

    • αἰώνιονaionionadjective · accusative (object) · neuter singulartagged: everlasting

Where it leads

How the numbers are counted

Every count on this page comes from STEP Bible's tagged Hebrew and Greek text, the same text the ledger prints. A use is counted once each time the tagging marks a word with this key.

Spellings are counted as the Greek text spells them, with the sentence's own punctuation taken off the word first, so a form that ends a clause is not counted as a second spelling.

The family is read from the lexicon by the stem the two words share, with the accents off, and a person or a place named on the stem is left out.

Hebrew and Greek text, word tagging and grammar: STEP Bible (www.STEPBible.org), Tyndale House, CC BY 4.0. Their grammar codes are written out in English here and shown as tagged beside each one.

Meaning and senses: STEP Bible TBESG (Tyndale House, CC BY 4.0), the Brief lexicon based on Abbott-Smith (1922).

Dictionary key: Strong's Exhaustive Concordance of the Bible (1890, public domain). English verse text: Berean Standard Bible (public domain, 2023).

Revised 2026-09-05. Every cited work, the sources registry →