1 Corinthians 8:7

But knowledge is not in every one, &c. The new converts, who had been Jews, thought that things which had been offered to idols were defiled, unclean, and could not be lawfully eaten: they who had been Gentiles looked upon them as victims offered to idols, in which there was some virtue of enchantment, &c. Their weak consciences judged they could not be lawfully eaten: and when they were induced to eat them by the example of others, it was still against their consciences. The infidels also might sometimes think that the Christians, in eating such things, honoured their idols; in such cases, they who were better instructed, were to abstain, not to give offence to weak consciences, and lest they should make them sin. And a weak brother shall perish, for whom Christ died; where we may learn, that Christ died also for those the shall perish, and not only for the predestinate. (Witham)