Bingo, Hildy.
Jesus said to his disciples: “Things that cause people to sin are bound to come, but woe to that person through whom they come. It would be better for him to be thrown into the sea with a millstone tied around his neck than for him to cause one of these little ones to sin. So watch yourselves.” (Luke 17:1-3)
I wish I could do photoshopping. Can anyone find a picture of a millstone?