1 John 3: 13 - 18
13 Do not wonder, brethren, that the world hates you.
14 We know that we have passed out of death into life, because we love the brethren. He who does not love abides in death.
15 Any one who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him.
16 By this we know love, that he laid down his life for us; and we ought to lay down our lives for the brethren.
17 But if any one has the world's goods and sees his brother in need, yet closes his heart against him, how does God's love abide in him?
18 Little children, let us not love in word or speech but in deed and in truth.

EWTN