1 Corinthians 8:7-12

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. But food will not commend us to God; we are neither the worse if we do not eat, nor the better if we do eat. But take care that this liberty of yours does not somehow become a stumbling block to the weak. For if someone sees you, who have knowledge, dining in an idol’s temple, will not his conscience, if he is weak, be strengthened to eat things sacrificed to idols? For through your knowledge he who is weak is ruined, the brother for whose sake Christ died. And so, by sinning against the brethren and wounding their conscience when it is weak, you sin against Christ.