It would be better for him to have a millstone hung around his neck and to be thrown into the sea than to cause one of these little ones to stumble.
KJV
It were better for him that a millstone were hanged about his neck, and he cast into the sea, than that he should offend one of these little ones.
ASV
It were well for him if a millstone were hanged about his neck, and he were thrown into the sea, rather than that he should cause one of these little ones to stumble.