John Gill Commentary Deuteronomy 13:10

"And thou shalt stone him to death with stones, because he hath sought to draw thee away from Jehovah thy God, who brought thee out of the land of Egypt, out of the house of bondage." — Deuteronomy 13:10 (ASV)

And you shall stone him with stones, that he die
It was not sufficient to answer the end of the law to cast a few stones at him, but he was to be stoned to death:

because he has sought to thrust you away from the Lord your God ;
to compel by force of argument, or the dint of persuasion, to relinquish the profession of the true God, faith in him, and the worship of him:

which brought you out of the land of Egypt, from the house of bondage ;
which aggravated the sin of the enticer, and would have made the sin of the enticed the more heinous had he fallen into it.