1 John 2:7

2:7 Dear friends, I am not writing a new commandment to you, but an old commandment which you have had from the beginning. The old commandment is the word that you have already heard.

1 John 4:21

4:21 And the commandment we have from him is this: that the one who loves God should love his fellow Christian too.

1 John 2:8

2:8 On the other hand, I am writing a new commandment to you which is true in him and in you, because the darkness is passing away and the true light is already shining.

1 John 3:23

3:23 Now this is his commandment: that we believe in the name of his Son Jesus Christ and love one another, just as he gave us the commandment.