14 we—we have known that we have passed out of the death to the life, because we love the brethren; he who is not loving the brother doth remain in the death. 15 Every one who is hating his brother—a man-killer he is, and ye have known that no man-killer hath life age-during in him remaining,
Matthew Henry's Commentary on 1 John 3:14-15
Commentary on 1 John 3:11-15
(Read 1 John 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.