2 By this we know that we love the children of God: whenever we love God and keep his commandments.
1 John 5:2 Cross References - LEB
John 13:34-35
John 15:17
17 These things I command you: that you love one another.
1 John 2:5
5 But whoever keeps his word, truly in this person the love of God has been perfected. By this we know that we are in him.
1 John 3:22-24
22 and whatever we ask we receive from him, because we keep his commandments and do what is pleasing ⌊in his sight⌋*.
23 And this is his commandment: that we believe in the name of his Son Jesus Christ and love one another, just as ⌊he commanded us⌋*.
24 And the one who keeps his commandments resides in him, and he in him. And by this we know that he resides in us: by the Spirit whom he has given to us.
1 John 4:21
21 And this is the commandment we have from him: that the one who loves God should love his brother also.