1 John 3:9-19

9 Everyone who is fathered by God does not practice sin, because his seed resides in him, and [he is] not able to sin, because he has been fathered by God.

10 By this the children of God and the children of the devil are evident: everyone who does not practice righteousness is not of God, namely, the one who does not love his brother.

God is Love, so Love One Another

11 For this is the message that you have heard from the beginning: that we should love one another,

12 not as Cain, who was of the evil one and violently murdered his brother. And {for what reason} did he violently murder him? Because his deeds were evil and the [deeds] of his brother [were] righteous.

13 Do not marvel, brothers, if the world hates you.

14 We know that we have passed over from death to life because we love the brothers. The one who does not love remains in death.

15 Everyone who hates his brother is a murderer, and you know that every murderer does not have eternal life residing in him.

16 We have come to know love by this: that {he} laid down his life on behalf of us, and we ought to lay down our lives on behalf of the brothers.

17 But whoever has the world's material possessions and observes his brother {in need} and shuts his heart against him, how does the love of God reside in him?

18 Little children, let us not love with word or with tongue, but in deed and truth.

19 By this we know that we are of the truth and will convince our heart before him,