'Millstone' in the Bible

“But whoever causes the downfall of one of these little ones who believe in Me—it would be better for him if a heavy millstone were hung around his neck and he were drowned in the depths of the sea!

“But whoever causes the downfall of one of these little ones who believe in Me—it would be better for him if a heavy millstone were hung around his neck and he were thrown into the sea.

It would be better for him if a millstone were hung around his neck and he were thrown into the sea than for him to cause one of these little ones to stumble.

Then a mighty angel picked up a stone like a large millstone and threw it into the sea, saying:In this way, Babylon the great citywill be thrown down violentlyand never be found again.