1 John 3:16-17, 23

Hereby perceive we the love of God, because he laid down his life for us: and we ought to lay down our lives for the brethren. But whoso hath this world's good, and seeth his brother have need, and shutteth up his bowels of compassion from him, how dwelleth the love of God in him?

And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.