Marcos 9:42

42 "If anyone causes one of these little ones - those who believe in me - to stumble, it would be better for them if a large millstone were hung around their neck and they were thrown into the sea.

42 And whosoever shall cause one of these little ones that believe on me to stumble, it were better for him if a great millstone were hanged about his neck, and he were cast into the sea.