Adam Clarke on Matthew 21:41

He will miserably destroy those wicked men - So, according to this evangelist, our Lord caused them to pass that sentence of destruction upon themselves which was literally executed about forty years after. But Luke relates it differently: according to him, they said μη γενοιτο, God forbid! The Codex Leicestrensis omits οι λεγουσιν, they say; so that the following words appear to be spoken by our Lord. Michaelis supposes that in the Hebrew original the word was ויאמר waiomer, he said; for which the Greek translator might have read ויאמרו waiomeru, they said.