TSK · Genesis 4:1

And Adam knew his wife again; and she bare a son, and called his name Seth: For, [said she], God hath appointed me another seed instead of Abel; for Cain slew him.

Now therefore kill every male among the little ones, and kill every woman that hath known man by lying with him.

not as Cain was of the evil one, and slew his brother. And wherefore slew he him? Because his works were evil, and his brother's righteous.