Ephesians 4:18
in Ephesians 4They are darkened in their understanding and alienated from the life of God because of the ignorance that is in them due to the hardness of their hearts.
BSB
The same verse in ASV and KJV ▾
ASV
being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their heart;
KJV
Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart:
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This verse in Ephesians 4
Commentary
12 notes on this verseWhy did the Gentiles walk in vanity? Obviously because in performing such acts their reason is not guided by an enlightened understanding, but an erroneous one. This is what he says about them having their understanding darkened. "Their foolish heart was darkened" (Rom. 1:21), and …
This site's exposition
walk not as other Gentiles walk, in the vanity of their mind
on Ephesians 4:17-19
This I say therefore names the fourth beat of the walk thread, after the dead walk of 2:2, the prepared walk of 2:10, and the worthy walk of 4:1, now the walk not as other Gentiles walk. Vanity of their mind translates mataiotes, emptiness or futility, thinking that has lost its true object. The chain in verses eighteen and nineteen runs downward in careful steps, darkened understanding to alienation from the life of God to a hardened heart to being past feeling, apalgeo, calloused beyond the reach of pain, ending in lasciviousness pursued with greediness, pleonexia, a wanting that never reaches enough.
The record, by era
The Church Fathers3 voices
A commentator
Theodoret of CyrusInterpretation of the Epistle to the Ephesians 4.18 · Written before 458.
proposed
By "hardness of heart" he means a complete lack of remorse. When parts of the body are hardened, they feel no sensation, as though they were completely dead. This may happen to the heart.
A commentator
Pseudo-ClementSecond Epistle To The Corinthians (Pseudo-Clement) · Written before 400.
proposed
So then, brothers and sisters, after the God of truth I address to you an appeal that you may give heed to the words written, that you may save both yourselves and him who reads an address in your midst. For as a reward I …
There is such a thing as being in the dark, even while the light is shining, when the eyes are weak; and weak they become, either by the influx of ill humors, or by superabundance of rheum. And so surely is it also here; when the strong current of the affairs of this life overwhelms the perceptive power of the understanding, it is thrown into a state of darkness. And in the same way as if we were placed in the depths under water, we should be unable to see the sun through the quantity of water lying, like a sort of barrier, above us, so surely, in the eyes of the understanding also a blindness of the heart takes place, that is, an insensibility, whenever there is no fear to agitate the soul. "There is no fear of God," it saith, "before his eyes"; and again, "The fool hath said in his heart, There is no God." Now blindness arises from no other cause than from want of feeling; this clogs the channel; for whenever the fluids are curdled and collected into one place, the limb becomes dead and void of feeling; and though thou burn it, or cut it, or do what thou wilt with it, still it feels not. So is it also with those persons, when they have once given themselves over to lasciviousness: though thou apply the word to them like fire, or steel, yet noting touches, nothing reaches them; their limb is utterly dead. And unless thou canst remove the insensibility, so as to touch the healthy members, everything thou doest is vain.
The Medieval Church1 voice
Although the light of the knowledge of God and of a pure life was shining, they darkened themselves, having weakened the sight of the soul with the gloom of passions and worldly cares. Indeed, passions and worldly concerns represent a great and hard-to-cross torrent that …
The Puritans and the Awakening1 voice
For the perfecting the saints - The completing them both in number and their various gifts and graces. To the work of the ministry - The serving God and his church in their various ministrations. To the edifying of the body of Christ - The building up this his mystical body in faith, love, holiness.
5 more voices on this verse
The Puritans and the Awakening2 voices
Having the understanding darkened,....
They were estranged from, and had a dislike and aversion to, a life of holiness, which is not only that way of life which God requires and approves, and by which we live to him, but which resembles God himself, in his purity, righteousness, truth, and goodness. Their wilful ignorance was the cause of their estrangement from this life of God, which begins in light and knowledge.
The Nineteenth Century3 voices
2. Having the understanding darkened - This is the second instance alleged by the apostle of the degradation of the Gentiles. Having no means of knowledge, the heart, naturally dark, became more and more so by means of habitual transgression; every thing in the Gentile system having an immediate tendency to blind the eyes and darken the whole soul.
A commentator
Jamieson, Fausset & Brown1802–1910
Commentary Critical and Explanatory on the Whole Bible (1871)
proposed
"Spiritual life in believers is kindled from the life itself of God" [BENGEL]. through--rather as Greek, "on account of the ignorance," namely, of God. Wilful ignorance in the first instance, their fathers not "choosing to retain God in their knowledge." This is the beginning point of their misery (Ac 17:30;
quarantine:debris (2026-07-29) — unbalanced-parens
A commentator
Albert Barnes1798–1870
Notes, Explanatory and Practical, on the Old and New Testaments (1832-1869)
proposed
Having the understanding darkened - That is, because they were alienated from the true God, and particularly because of “the blindness of their hearts.” The apostle does not say that this was a “judicial” darkening of the understanding; or that they might not have perceived the truth; or that they had no ability to understand it. He speaks of a simple and well-known fact - a fact that is seen now as well as then that the understanding becomes darkened by indulgence in sin. A man who is intemperate, has no just views of the government of the appetites. A man who is unchaste, has no perception of the loveliness of purity. A man who is avaricious or covetous, has no just views of the beauty of benevolence. A man who indulges in low vices, will weaken his mental powers, and render himself incapable of intellectual effort. Indulgence in vice destroys the intellect as well as the body, and unfits a man to appreciate the truth of a proposition in morals, or in mathematics, or the beauty of a poem, as well as the truth and beauty of religion. Nothing is more obvious than that indulgence in sin weakens the mental powers, and renders them unfit for high intellectual effort. This is seen all over the pagan world now - in the stolid, stupid mind; the perverted moral sense; the incapacity for profound or protracted mental effort, as really as it was among the pagans to whom Paul preached. The missionary who goes among the pagan has almost to create an “intellect” as well as a “conscience,” before the gospel will make an impression. It is seen, too, in all the intellect of the bar, the senate, the pulpit, and the medical profession, that is ruined by intemperance, and in the intellect of multitudes of young men wasted by licentiousness and drunkenness. […]
The words behind it
22 Greek wordsEvery Greek word of this verse in the order it stands, with what it means and the door to its own study. The last column counts the times a word stands in the whole Bible: the rarer the word, the more the places it appears belong together.
| Greek | Sound | Meaning | Word study | In the Bible |
|---|---|---|---|---|
| ἐσκοτωμένοι | eskotomenoi | darkened | G4656 → | |
| τῇ | tea | in the | G3588 → | 19766 times |
| διανοίᾳ | dianoia | understanding | G1271 → | |
| ὄντες, | ontes | being | G1510 → | 2333 times |
| ἀπηλλοτριωμένοι | apellotriomenoi | alienated | G526 → | |
| τῆς | tes | from the | G3588 → | 19766 times |
| ζωῆς | zoes | life | G2222 → | |
| τοῦ | tou | <the> | G3588 → | 19766 times |
| θεοῦ | theou | of God | G2316 → | 1312 times |
| διὰ | dia | because of | G1223 → | 664 times |
| τὴν | ten | the | G3588 → | 19766 times |
| ἄγνοιαν | agnoian | ignorance | G52 → | |
| τὴν | ten | which | G3588 → | 19766 times |
| οὖσαν | ousan | is being | G1510 → | 2333 times |
| ἐν | en | in | G1722 → | 2738 times |
| αὐτοῖς, | autois | them, | G846 → | 5565 times |
| διὰ | dia | on account of | G1223 → | 664 times |
| τὴν | ten | the | G3588 → | 19766 times |
| πώρωσιν | porosin | hardness | G4457 → | |
| τῆς | tes | of the | G3588 → | 19766 times |
| καρδίας | kardias | heart | G2588 → | 156 times |
| αὐτῶν· | auton | of them; | G846 → | 5565 times |
ἐσκοτωμένοιdarkened
eskotomenoiG4656 →
τῇin the
teaG3588 →19766 times
διανοίᾳunderstanding
dianoiaG1271 →
ὄντες,being
ontesG1510 →2333 times
ἀπηλλοτριωμένοιalienated
apellotriomenoiG526 →
τῆςfrom the
tesG3588 →19766 times
ζωῆςlife
zoesG2222 →
τοῦ<the>
touG3588 →19766 times
θεοῦof God
theouG2316 →1312 times
διὰbecause of
diaG1223 →664 times
τὴνthe
tenG3588 →19766 times
ἄγνοιανignorance
agnoianG52 →
τὴνwhich
tenG3588 →19766 times
οὖσανis being
ousanG1510 →2333 times
ἐνin
enG1722 →2738 times
αὐτοῖς,them,
autoisG846 →5565 times
διὰon account of
diaG1223 →664 times
τὴνthe
tenG3588 →19766 times
πώρωσινhardness
porosinG4457 →
τῆςof the
tesG3588 →19766 times
καρδίαςheart
kardiasG2588 →156 times
αὐτῶν·of them;
autonG846 →5565 times
A shaded row is a word that stands 400 times or fewer in the Bible.
The walk
8 stopsEach card is a verse this one points to, and under it the verses that one points to in turn. Where several paths arrive at the same place, that place is listed first: the text keeps returning to it.
Through
2 Corinthians 4:4The god of this age has blinded the minds of unbelievers so they cannot see the light of the gospel of the glory of Christ, who is the image of God.
it leads to
- Isaiah 6:10
Make the hearts of this people calloused; deafen their ears and close their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts, and turn and be healed.”
Reached by 3 separate paths from here.
- John 12:40
“He has blinded their eyes and hardened their hearts, so that they cannot see with their eyes, and understand with their hearts, and turn, and I would heal them.”
- Acts 26:18
to open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness of sins and an inheritance among those sanctified…
- 2 Corinthians 3:14
But their minds were closed. For to this day the same veil remains at the reading of the old covenant. It has not been lifted, because only in Christ can it be removed.
- 1 John 5:19
We know that we are of God, and that the whole world is under the power of the evil one.
- Isaiah 6:10
Through
Matthew 13:15For this people’s heart has grown callous; they hardly hear with their ears, and they have closed their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts,…
it leads to
- Mark 4:12
so that, ‘they may be ever seeing but never perceiving, and ever hearing but never understanding; otherwise they might turn and be forgiven.’”
Reached by 2 separate paths from here.
- Mark 4:12
Through
John 12:40“He has blinded their eyes and hardened their hearts, so that they cannot see with their eyes, and understand with their hearts, and turn, and I would heal them.”
it leads to
- Matthew 13:13–15
This is why I speak to them in parables: ‘Though seeing, they do not see; though hearing, they do not hear or understand.’
- Matthew 13:13–15
Through
Ephesians 2:12remember that at that time you were separate from Christ, alienated from the commonwealth of Israel, and strangers to the covenants of the promise, without hope and without God in the world.
it leads to
- Galatians 4:8
Formerly, when you did not know God, you were slaves to those who by nature are not gods.
- Galatians 4:8
Where this verse is studied
About Ephesians

This page draws on 11 works. Open the list of works
This page draws on Adam Clarke, Commentary on the Bible; Albert Barnes, Notes, Explanatory and Practical, on the Old and New Testaments (1832-1869); Jamieson, Fausset & Brown, Commentary Critical and Explanatory on the Whole Bible; John Chrysostom, Homily on Ephesians 13; John Gill, Exposition of the New Testament (1746-1748); John Wesley, Explanatory Notes upon the New Testament; Matthew Henry, Commentary on the Whole Bible; Pseudo-Clement, Second Epistle To The Corinthians (Pseudo-Clement); Theodoret of Cyrus, Interpretation of the Epistle to the Ephesians 4.18; Theophylact of Ohrid, Commentary on Ephesians and Thomas Aquinas, Commentary on Ephesians.
