Leviticus 24:16

24:16 and one who misuses the name of the Lord must surely be put to death. The whole congregation must surely stone him, whether he is a foreigner or a native citizen; when he misuses the Name he must be put to death.

Leviticus 24:23

24:23 Then Moses spoke to the Israelites and they brought the one who cursed outside the camp and stoned him with stones. So the Israelites did just as the Lord had commanded Moses.