Mark 9:42-43

9:42 “If anyone causes one of these little ones who believe in me to sin, it would be better for him to have a huge millstone tied around his neck and to be thrown into the sea. 9:43 If your hand causes you to sin, cut it off! It is better for you to enter into life crippled than to have two hands and go into hell, to the unquenchable fire.

Mark 9:47

9:47 If your eye causes you to sin, tear it out! It is better to enter into the kingdom of God with one eye than to have two eyes and be thrown into hell,

Mark 14:21

14:21 For the Son of Man will go as it is written about him, but woe to that man by whom the Son of Man is betrayed! It would be better for him if he had never been born.”