Luke 17:1-2

1Jesus said to His disciples, “Stumbling blocks [temptations and traps set to lure one to sin] are sure to come, but woe (judgment is coming) to him through whom they come!

2It would be better for him if a millstone [as large as one turned by a donkey] were hung around his neck and he were hurled into the sea, than for him to cause one of these little ones to stumble [in sin and lose faith].