Leviticus 24:14; Leviticus 24:16

14 "Bring the one who has cursed outside the camp, and let all who heard him lay their hands on his head; then let all the congregation stone him.

16 'Moreover, the one who blasphemes the name of the LORD shall surely be put to death; all the congregation shall certainly stone him. The alien as well as the native, when he blasphemes the Name, shall be put to death.