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 3:16

3:16 We have come to know love by this: that Jesus laid down his life for us; thus we ought to lay down our lives for our fellow Christians.

1 John 4:13

4:13 By this we know that we reside in God and he in us: in that he has given us of his Spirit.

1 John 5:14

5:14 And this is the confidence that we have before him: that whenever we ask anything according to his will, he hears us.