11 Because this is the word which was given to you from the first, that we are to have love for one another; 12 Not being of the Evil One like Cain, who put his brother to death. And why did he put him to death? Because his works were evil and his brother's works were good. 13 Do not be surprised, my brothers, if the world has no love for you.
14 We are conscious that we have come out of death into life because of our love for the brothers. He who has no love is still in death. 15 Anyone who has hate for his brother is a taker of life, and you may be certain that no taker of life has eternal life 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.