¹⁰ This is how we know who the children of God^(A) are and who the children of the devil^(B) are: Anyone who does not do what is right is not God’s child, nor is anyone who does not love^(C) their brother and sister.^(D)

More on Love and Hatred

¹¹ For this is the message you heard^(E) from the beginning:^(F) We should love one another.^{(G) 12} Do not be like Cain, who belonged to the evil one^(H) and murdered his brother.^(I) And why did he murder him? Because his own actions were evil and his brother’s were righteous.^{(J) 13} Do not be surprised, my brothers and sisters,^[a] if the world hates you.^{(K) 14} We know that we have passed from death to life,^(L) because we love each other. Anyone who does not love remains in death.^{(M) 15} Anyone who hates a brother or sister^(N) is a murderer,^(O) and you know that no murderer has eternal life residing in him.^(P)

¹⁶ This is how we know what love is: Jesus Christ laid down his life for us.^(Q) And we ought to lay down our lives for our brothers and sisters.^{(R) 17} If anyone has material possessions and sees a brother or sister in need but has no pity on them,^(S) how can the love of God be in that person?^{(T) 18} Dear children,^(U) let us not love with words or speech but with actions and in truth.^(V)