1 John 3:15

Finally, such are crowned by the Lord, such will be avenged with the Lord in the day of judgment; but the quarrelsome and disunited, and he who has not peace with his brethren, in accordance with what the blessed apostle and the Holy Scripture testifies, even if he have been slain for the name of Christ, shall not be able to escape the crime of fraternal dissension, because, as it is written, "He who hateth his brother is a murderer" and no murderer attains to the kingdom of heaven, nor does he live with God. He cannot be with Christ, who had rather be an imitator of Judas than of Christ. How great is the sin which cannot even be washed away by a baptism of blood-how heinous the crime which cannot be expiated by martyrdom!

Why do you rush into the darkness of jealousy? why do you enfold yourself in the cloud of malice? why do you quench all the light of peace and charity in the blindness of envy? why do you return to the devil, whom you had renounced? why do you stand like Cain? For that he who is jealous of his brother, and has him in hatred, is bound by the guilt of homicide, the Apostle John declares in his epistle, saying, "Whosoever hateth his brother is a murderer; and ye know that no murderer hath life abiding in him." And again: "He that saith he is in the light, and hateth his brother, is in darkness even until now, and walketh in darkness, and knoweth not whither he goeth, because that darkness hath blinded his eyes." Whosoever hates, says he, his brother, walketh in darkness, and knoweth not whither he goeth. For he goeth unconsciously to Gehenna, in ignorance and blindness; he is hurrying into punishment, departing, that is, from the light of Christ, who warns and says, "I am the light of the world. He that followeth me shall not walk in darkness, but shall have the light of life." But he follows Christ who stands in His precepts, who walks in the way of His teaching, who follows His footsteps and His ways, who imitates that which Christ both did and taught; in accordance with what Peter also exhorts and warns, saying, "Christ suffered for us, leaving you an example that ye should follow His steps."

"Every one who hates his brother is a murderer." For in him through unbelief Christ dies. Rightly, therefore, he continues, "And you know that no murderer and unbeliever has eternal life abiding in him." For the living Christ abides in the believing soul.

And if we owe our lives to the brethren, and have made such a mutual compact with the Saviour, why should we any more hoard and shut up worldly goods, which are beggarly, foreign to us and transitory? Shall we shut up from each other what after a little shall be the property of the fire? Divinely and weightily John says, "He that loveth not his brother is a murderer," the seed of Cain, a nursling of the devil. He has not God's compassion. He has no hope of better things. He is sterile; he is barren; he is not a branch of the ever-living supercelestial vine. He is cut off; he waits the perpetual fire.

Likewise homicide is committed interpretively, and this occurs in three ways: first, by omitting in deed: whence Ambrose says: "Feed the one dying of hunger: if you have not fed him, you have killed him." In the second way it occurs when someone kills another …

Everyone who hates his brother is a murderer. If anyone despised brotherly hatred, would he also despise murder in his heart? He does not move his hands to kill a man, yet he is already considered a murderer by God. That man lives, but this …

And you know that no murderer has eternal life abiding in him. Even if he seems to live among the saints through faith here, he does not have eternal life abiding in him. For when the time of retribution comes, he will be damned with …

And no murderer hath eternal life abiding in him - But every loving believer hath. For love is the beginning of eternal life. It is the same, in substance, with glory.

Whosoever hateth his brother is a murderer,....

Whosoever hateth his brother is a murderer ... - That is, he has the spirit of a murderer; he has that which, if it were acted out, would lead him to commit murder, as it did Cain. The private malice, the secret grudge, the envy which is cherished in the heart, is murderous in its tendency, and were it not for the outward restraints of human laws, and the dread of punishment, it would often lead to the act of murder.

God regards the inward disposition as tantamount to the outward act which would flow from it. Whomsoever one hates, one wishes to be dead. hath--Such a one still "abideth in death." It is not his future state, but his present, which is referred to. He who hates (that is, loveth not) his brother (1Jo 3:14), cannot in this his present state have eternal life abiding in him.

Whosoever hateth his brother is a murderer - He has the same principle in him which was in Cain, and it may lead to the same consequences. No murderer hath eternal life - Eternal life springs from an indwelling God; and God cannot dwell in the heart where hatred and malice dwell. This text has been quoted to prove that no murderer can be saved. This is not said in the text; and there have been many instances of persons who have been guilty of murder having had deep and genuine repentance, and who doubtless found mercy from his hands who prayed for his murderers, Father, forgive them; for they know not what they do! It is, however, an awful text for the consideration of those who shed human blood on frivolous pretences, or in those wars which have their origin in the worst passions of the human heart.