(13:11) Finally, brethren, be joyful, secure perfection of character, take courage, be of one mind, live in peace. And then God who gives love and peace will be with you.(13:12) Salute one another with a holy kiss.
By this we can distinguish God's children and the Devil's children: no one who fails to act righteously is a child of God, nor he who does not love his brother man.
And, as for us, we know the love which God has for us, and we confide in it. God is love, and he who continues to love continues in union with God, and God continues in union with him.