27 If a Gentile makes a feast for you, and you are pleased to go as a guest, take whatever is put before you, without question of right or wrong. 28 But if anyone says to you, This food has been used as an offering, do not take it, on account of him who said it, and on account of his sense of right and wrong: 29 Right and wrong, I say, not for you, but for the other man; for the fact that I am free is not dependent on another man's sense of right or wrong. 30 But if I give praise to God for the food which I take, let no man say evil of me for that reason.
Matthew Henry's Commentary on 1 Corinthians 10:27-30
Commentary on 1 Corinthians 10:23-33
(Read 1 Corinthians 10:23-33)
There were cases wherein Christians might eat what had been offered to idols, without sin. Such as when the flesh was sold in the market as common food, for the priest to whom it had been given. But a Christian must not merely consider what is lawful, but what is expedient, and to edify others. Christianity by no means forbids the common offices of kindness, or allows uncourteous behaviour to any, however they may differ from us in religious sentiments or practices. But this is not to be understood of religious festivals, partaking in idolatrous worship. According to this advice of the apostle, Christians should take care not to use their liberty to the hurt of others, or to their own reproach. In eating and drinking, and in all we do, we should aim at the glory of God, at pleasing and honouring him. This is the great end of all religion, and directs us where express rules are wanting. A holy, peaceable, and benevolent spirit, will disarm the greatest enemies.