1 John 3:11-12, 23

The beautiful message you’ve heard right from the start is that we should walk in self-sacrificing love toward one another. We should not be like Cain, who yielded to the Evil One and brutally murdered his own brother, Abel. And why did he murder him? Because his own actions were evil and his brother’s righteous.

So these are his commands: that we continually place our trust in the name of his Son, Jesus Christ, and that we keep loving one another, just as he has commanded us.