1 Corinthians 8:4
4 Therefore, concerning the eating of things sacrificed to idols, we know that an idol is nothing in the world, and that there is no God but one.
1 Corinthians 8:7
7 However, not all men have this knowledge; but some, being accustomed to the idol until now, eat food as if it were sacrificed to an idol; and their conscience, being weak, is defiled.