1 John 5:2

5:2 By this we know that we love the children of God: whenever we love God and obey his commandments.

1 John 4:16

4:16 And we have come to know and to believe the love that God has in us. God is love, and the one who resides in love resides in God, and God resides in him.

1 John 4:18

4:18 There is no fear in love, but perfect love drives out fear, because fear has to do with punishment. The one who fears punishment has not been perfected in love.

1 John 4:20

4:20 If anyone says “I love God” and yet hates his fellow Christian, he is a liar, because the one who does not love his fellow Christian whom he has seen cannot love God whom he has not seen.