11
For this is the message which you have heard from the beginning: that we should love each other
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and not be like Kayin, who was from the Evil One and murdered his own brother. Why did he murder him? Because his own actions were evil, and his brother's were righteous.
13
Don't be amazed, brothers, if the world hates you.
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We, for our part, know that we have passed from death to life because we keep loving the brothers. The person who fails to keep on loving is still under the power of death.
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Everyone who hates his brother is a murderer, and you know that no murderer has eternal life in him.