1 John 1:5

1:5 This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.

1 John 1:10

1:10 If we say that we have not sinned, we make him a liar, and his word is not in us.

1 John 2:5

2:5 But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.

1 John 2:7

2:7 Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning. The old commandment is the word which ye have heard from the beginning.

1 John 4:2

4:2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God: