'Neck' in the Bible

"If anyone causes one of these little ones who believe in me to sin, it would be better for him if a large millstone were hung around his neck and he were drowned at the bottom of the sea.

"If anyone causes one of these little ones who believe in me to sin, it would be better for him if a large 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 sin.

So why do you test God by putting on the disciples' neck a yoke that neither our ancestors nor we could carry?