Leviticus 24:13-16

Then GOD spoke to Moses: “Take the blasphemer outside the camp. Have all those who heard him place their hands on his head; then have the entire congregation stone him. Then tell the Israelites, Anyone who curses God will be held accountable; anyone who blasphemes the Name of GOD must be put to death. The entire congregation must stone him. It makes no difference whether he is a foreigner or a native, if he blasphemes the Name, he will be put to death.