You belong to your father, the devil, and you want to carry out your father’s wishes. From the beginning, the devil has been a murderer. He has never obeyed the truth because there’s no truth in him. When he lies, he speaks his native language, because he is a liar and the father of lies.
Don’t be like Cain, who belonged to the evil one and murdered his brother. And why did he murder him? Because the things he did were wrong, and the things his brother did were right.