11 For this is the message you heard from the beginning: We should love one another. 12 Do not be like Cain, who belonged to the evil one and murdered his brother. And why did he murder him? Because his own actions were evil and his brother's were righteous. 13 Do not be surprised, my brothers and sisters, if the world hates you. 14 We know that we have passed from death to life, because we love each other. Anyone who does not love remains in death. 15 Anyone who hates a fellow believer is a murderer, and you know that no murderers have eternal life in them.
16 This is how we know what love is: Jesus Christ laid down his life for us. And we ought to lay down our lives for one another. 17 If any one of you has material possessions and sees a brother or sister in need but has no pity on them, how can the love of God be in you? 18 Dear children, let us not love with words or tongue but with actions and in truth.