He that says he is in the light, and hates his brother, is in darkness even until now.
Read Chapter 2
Augustine of Hippo
AD 430
What! My brethren, how long shall we say to you, Love your enemies? Matthew 5:44 See whether, what is worse, you do not hate your brethren. If you loved only your brethren, you would be not yet perfect: but if you hate your brethren, what are you, where are you? Let each look to his own heart: let him not keep hatred against his brother for any hard word; on account of earthly contention let him not become earth. For whoso hates his brother, let him not say that he walks in the light. He that says he is in the light, and hates his brother, is in darkness even until now. Thus, some man who was a pagan has become a Christian; mark well: behold he was in darkness, while he was a pagan: now is he made henceforth a Christian; thanks be to God, say all joyfully; the apostle is read, where he says joyfully, For you were sometime darkness, but now light in the Lord. Ephesians 5:8 Once he worshipped idols, now he worships God; once he worshipped the things he made, now he worships Him that made...
He that saith he is in the Light (of the Gospel, Faith, and Charity) and hateth his brother, is in darkness, in ignorance of his sins, anger, hatred, lust, &c. And by these he is so blinded as not to see the great evil of hatred, how odious to God, who is the light of Charity, what destruction it causes, what torments of hell it brings with it. "He is blinded with his wickedness," says S. Chrysostom (de Erudit. discipl.): "he goes ignorantly into hell-fire, and is hurled headlong into punishments." See Exodus 11:16. And S. Cyprian (de zelo et livore) says: "If thou hast begun to be a man of light, do the things of Christ, for He is our Light and day. Why rushest thou into the darkness of anger? Why wrappest thou thyself in a mist of envy? Why dost thou extinguish with the darkness of envy every spark of peace and charity? Why dost thou go back to the devil, whom thou hast renounced? Why hast thou become like Cain? Cain? He is in the darkness of hell, because he is tending towards it."...
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.".
Also in the same place: "He who saith he is in the light, and hateth his brother, is a liar, and walketh in darkness even until now."
