3:15 {15} Whosoever hateth his brother is a murderer: and ye know that no murderer hath eternal life abiding in him.
(15) A confirmation: Whoever is a murderer, is in eternal death: he who hates his brother is a murderer, therefore he is in death. Thereupon follows the other side: He that loves his brother has passed to life, for indeed we are born dead.
3:15 Whosoever hateth his brother is a murderer. Has the germs from which murder springs lurking in his heart. Hatred led Cain to murder; so it does many other who sin likewise.
And ye know that no murderer hath eternal life abiding in him. It is impossible for a man to have the spirit of murder in him and yet have eternal life.
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.
3:11-15 We should love the Lord Jesus, value his love, and therefore love all our brethren in Christ. This love is the special fruit of our faith, and a certain sign of our being born again. But none who rightly know the heart of man, can wonder at the contempt and enmity of ungodly people against the children of God. We know that we are passed from death to life: we may know it by the evidences of our faith in Christ, of which love to our brethren is one. It is not zeal for a party in the common religion, or affection for those who are of the same name and sentiments with ourselves. The life of grace in the heart of a regenerate person, is the beginning and first principle of a life of glory, whereof they must be destitute who hate their brother in their hearts.