1 John 2:5

2:5 But whoever obeys his word, truly in this person the love of God has been perfected. By this we know that we are in him.

1 John 4:17-18

4:17 By this love is perfected with us, so that we may have confidence in the day of judgment, because just as Jesus is, so also are we in this world. 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.