1 Corinthians 8:7-9

Howbeit there is not in all men that knowledge: but some, being used until now to the idol, eat as of a thing sacrificed to an idol; and their conscience being weak is defiled. But food will not commend us to God: neither, if we eat not, are we the worse; nor, if we eat, are we the better. But take heed lest by any means this liberty of yours become a stumblingblock to the weak.