1 John 3:14-18
3:14 We know that we have crossed over from death to life because we love our fellow Christians. The one who does not love remains in death.
3:15 Everyone who hates his fellow Christian is a murderer, and you know that no murderer has eternal life residing in him.
3:16 We have come to know love by this: that Jesus laid down his life for us; thus we ought to lay down our lives for our fellow Christians.
3:17 But whoever has the world’s possessions and sees his fellow Christian in need and shuts off his compassion against him, how can the love of God reside in such a person?
3:18 Little children, let us not love with word or with tongue but in deed and truth.
1 John 3:23
3:23 Now this is his commandment: that we believe in the name of his Son Jesus Christ and love one another, just as he gave us the commandment.