Luke 17:1-3

Then He said to the disciples, “It is impossible that no offenses should come, but woe to him through whom they do come! It would be better for him if a millstone were hung around his neck, and he were thrown into the sea, than that he should offend one of these little ones. Take heed to yourselves. If your brother sins against you, rebuke him; and if he repents, forgive him.