11 For this is the message which you have heard from the beginning, that we should love one another, 12 and not be like Cain who was of the evil one and murdered his brother. And why did he murder him? Because his own deeds were evil and his brother's righteous. 13 Do not wonder, brethren, that the world hates you.
14 We know that we have passed out of death into life, because we love the brethren. He who does not love abides in death. 15 Any one who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him.
Matthew Henry's Commentary on 1 John 3:11-15
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.