Judgement by the mouth of The Lord, even for Blasphemy.

And the son of the Israelite woman said evil against the holy Name, with curses; and they took him to Moses. His mother’s name was Shelomith, the daughter of Dibri, of the tribe of Dan.
Leviticus 24:11

And they kept him shut up, till a decision might be given by the mouth of the Lord.
Leviticus 24:12
And say to the children of Israel, As for any man cursing God, his sin will be on his head.
Leviticus 24:15