3:2Beloved, now are we children of God, and what we shall be has not yet been manifested; we know that if it is manifested we shall be like him, for we shall see him as he is.

3:10In this are manifest the children of God and the children of the devil. Whoever does not practise righteousness is not of God, and he who does not love his brother.

5:2Hereby know we that we love the children of God, when we love God and keep his commandments.