1-john 3:15

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.

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. The apostle does not say that he who hates his brother, though he does not in fact commit murder, is guilty to the same degree as if he had actually done it; but he evidently means to say that the spirit which would lead to murder is there, and that God will hold him responsible for it. Nothing is missing but the removal of outward restraints to lead to the commission of the open deed, and God judges people as he sees them to be "in their hearts." What a fearful declaration, then, is this! How many real murderers there are on the earth besides those who are detected and punished, and besides those open violators of the laws of God and man who go at large! And who is them that should not feel humbled and penitent in view of his own heart, and grateful for that sovereign mercy which has restrained him from open acts of guilt - for who is there who has not at some period of his life, and perhaps often, indulged in feelings of hatred, and envy, and malice toward others, which, if acted out, would have led to the commission of the awful crime of taking human life? Any man may well shudder at the remembrance of the secret sins of his own heart, and at the thought of what he would have been but for the restraining grace of God. And how wonderful is that grace which, in the case of the true Christian, not only restrains and checks, but which effectually subdues all these feelings, and implants in their place the principles of love!

3:15 He, I say, abideth in spiritual death, is void of the life of God. For whosoever hateth his brother, and there is no medium between loving and hating him, is, in God's account, a murderer: every degree of hatred being a degree of the same temper which moved Cain to murder his brother. 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.