1 John 2:4-5

2:4 The one who says “I have come to know God” and yet does not keep his commandments is a liar, and the truth is not in such a person. 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 2:18

Warning About False Teachers

2:18 Children, it is the last hour, and just as you heard that the antichrist is coming, so now many antichrists have appeared. We know from this that it is the last hour.

1 John 3:6

3:6 Everyone who resides in him does not sin; everyone who sins has neither seen him nor known 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 3:20

3:20 that if our conscience condemns us, that God is greater than our conscience and knows all things.

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 5:2

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

1 John 4:6

4:6 We are from God; the person who knows God listens to us, but whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of deceit.