Matthew 18:6-9

6but whoever causes one of these little ones who believe in Me to stumble and sin [by leading him away from My teaching], it would be better for him to have a heavy millstone [as large as one turned by a donkey] hung around his neck and to be drowned in the depth of the sea.

7“Woe (judgment is coming) to the world because of stumbling blocks and temptations to sin! It is inevitable that stumbling blocks come; but woe to the person on whose account or through whom the stumbling block comes!

8“If your hand or your foot causes you to stumble and sin, cut it off and throw it away from you [that is, remove yourself from the source of temptation]; it is better for you to enter life crippled or lame, than to have two hands or two feet and be thrown into everlasting fire.

9If your eye causes you to stumble and sin, pluck it out and throw it away from you [that is, remove yourself from the source of temptation]; it is better for you to enter life with only one eye, than to have two eyes and be thrown into the fiery hell.