Romans 14:2-3, 14-15

One man hath faith to eat all things: but he that is weak eateth herbs. Let not him that eateth set at nought him that eateth not; and let not him that eateth not judge him that eateth: for God hath received him.

I know, and am persuaded in the Lord Jesus, that nothing is unclean of itself: save that to him who accounteth anything to be unclean, to him it is unclean. For if because of meat thy brother is grieved, thou walkest no longer in love. Destroy not with thy meat him for whom Christ died.