Mark 9:42-43

42“But whoever causes one of these little ones who believe and trust in Me to stumble [that is, to sin or lose faith], it would be better for him if a heavy millstone [one requiring a donkey’s strength to turn it] were hung around his neck and he were thrown into the sea.

43If your hand causes you to stumble and sin, cut it off [that is, remove yourself from the source of temptation]! It is better for you to enter life crippled, than to have two hands and go into hell, into the unquenchable fire,