No one can serve two masters: either he will hate one and love the other, or else he will stand by the one and despise the other — you cannot serve both God and Mammon.
The cup of blessing, which we bless, is that not participating in the blood of Christ? The bread we break, is that not participating in the body of Christ?
Suppose anyone sees you, a person of enlightened mind, reclining at meat inside an idol's temple; will that really 'fortify his weak conscience'? Will it not embolden him to violate his scruples of conscience by eating food that has been offered to idols?