Matthew 18:7
"Woe unto the world because of such stumbling-blocks! They will surely come, but woe unto each man by whom they come!
Romans 14:15
If your brother is continually pained because of your food, you are not conducting yourself any longer in love. Do not, by what you eat, persist in destroying a man for whom Christ died.
Romans 14:20-21
Do not, for the sake of food, be tearing down God's work. All food indeed is ceremonially clean, but a man is in the wrong if his food proves a stumbling-block.
1 Corinthians 8:11-12
So he is lost, this weak man, lost by your "knowledge." this brother for whom Christ died.