John Calvin Commentary Leviticus 24:13

"And Jehovah spake unto Moses, saying," — Leviticus 24:13 (ASV)

And the Lord spoke to Moses. It must be remembered, then, that this punishment was not inflicted upon the blasphemer by human caprice or the headstrong zeal of the people, but that Moses was instructed by Divine revelation what sentence was to be pronounced. It has been elsewhere stated⁸³ why God would have evildoers slain by the hands of the witnesses. Another ceremony is here added, namely, that they should lay their hands upon his head, as if to throw the whole blame upon him.

⁸³ Vol. 2, p. 83, on , on Deuteronomy 13:9..