This is how we know that we remain in him and he in us, that he has given us of his Spirit.
We have not received the spirit of the world but the Spirit that is from God, so that we may understand the things freely given us by God.
Do you not know that your body is a temple of the holy Spirit within you, whom you have from God, and that you are not your own?
The way we may be sure that we know him is to keep his commandments.
But whoever keeps his word, the love of God is truly perfected in him. This is the way we may know that we are in union with him:
Those who keep his commandments remain in him, and he in them, and the way we know that he remains in us is from the Spirit that he gave us.