That all the congregation should engage in the punishment was no doubt meant to convey the idea how dreadful the sin was. And moreover, it tended, under divine grace, to keep others from such daring presumption. For who that had joined in stoning another for blasphemy, at the command of GOD, could himself hope to escape, if afterwards found guilty of it? That is a suitable prayer of the Psalmist, Psalms 19:13.
Related Commentaries of Leviticus 24:13
Leviticus 24:13-14
13 And the LORD spake unto Moses, saying,
14 Bring forth him that hath cursed without the camp; and let all that heard him lay their hands upon his head, and let all the congregation stone him.