2 My dear children,^(A) I write this to you so that you will not sin. But if anybody does sin, we have an advocate^(B) with the Father—Jesus Christ, the Righteous One. ² He is the atoning sacrifice for our sins,^(C) and not only for ours but also for the sins of the whole world.^(D)

Love and Hatred for Fellow Believers

³ We know^(E) that we have come to know him^(F) if we keep his commands.^{(G) 4} Whoever says, “I know him,”^(H) but does not do what he commands is a liar, and the truth is not in that person.^{(I) 5} But if anyone obeys his word,^(J) love for God^[a] is truly made complete in them.^(K) This is how we know^(L) we are in him: ⁶ Whoever claims to live in him must live as Jesus did.^(M)

⁷ Dear friends,^(N) I am not writing you a new command but an old one, which you have had since the beginning.^(O) This old command is the message you have heard. ⁸ Yet I am writing you a new command;^(P) its truth is seen in him and in you, because the darkness is passing^(Q) and the true light^(R) is already shining.^(S)

⁹ Anyone who claims to be in the light but hates a brother or sister^[b](T) is still in the darkness.^{(U) 10} Anyone who loves their brother and sister^[c] lives in the light,^(V) and there is nothing in them to make them stumble.^{(W) 11} But anyone who hates a brother or sister^(X) is in the darkness and walks around in the darkness.^(Y) They do not know where they are going, because the darkness has blinded them.^(Z)