Mark 9:39-43
English Standard Version
Chapter 9
39But Jesus said, "Do not stop him, for no one who does a mighty work in my name will be able soon afterward to speak evil of me. 40For the one who is not against us is for us. 41For truly, I say to you, whoever gives you a cup of water to drink because you belong to Christ will by no means lose his reward.
42"Whoever causes one of these little ones who believe in me to sin, it would be better for him if a great millstone were hung around his neck and he were thrown into the sea.
43And if your hand causes you to sin, cut it off. It is better for you to enter life crippled than with two hands to go to hell, to the unquenchable fire.