1 John 3:10-13

10In this are manifest the children of 1God and the children of the devil. Whoever does not practise righteousness is not of 2God, and he who does not love his brother.

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

12not as Cain was of the wicked one, and slew his brother; and on account of what slew he him? because his works were wicked, and those of his brother righteous.

13Do not wonder, brethren, if the world hate you.