1 John 3:10, 16, 20, 22-24

By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother.

By this we know love, that he laid down his life for us, and we ought to lay down our lives for the brothers.

for whenever our heart condemns us, God is greater than our heart, and he knows everything.

and whatever we ask we receive from him, because we keep his commandments and do what pleases him. And this is his commandment, that we believe in the name of his Son Jesus Christ and love one another, just as he has commanded us. Whoever keeps his commandments abides in God, and God in him. And by this we know that he abides in us, by the Spirit whom he has given us.