(15) I speak as to wise men.--These words are not hypothetical; they imply the point of view from which the Apostle is now regarding his readers--viz., competent to recognise the force of his argument. Having warned them against any participation in idolatry, even such as would be involved in joining in the sacrificial feasts, as dangerous to themselves, he now proceeds to show that such a participation would be derogatory to, and incompatible with, their union with Christ. The identity and intimacy of that union is first established by a reference to the Holy Communion, in partaking of which both the unity of the Church and its union with Christ are vividly expressed.

Verses 15-22. - The inherent disgracefulness of any tampering with idolatry. Verse 15. - I speak as to wise men; judge ye what I say. An appeal to their own reason to confirm his argument (comp. 1 Corinthians 11:13), perhaps with a touch of irony in the first clause (1 Corinthians 4:10; 2 Corinthians 11:19). The word for "I say" is φημι, I affirm.

10:15-22 Did not the joining in the Lord's supper show a profession of faith in Christ crucified, and of adoring gratitude to him for his salvation ? Christians, by this ordinance, and the faith therein professed, were united as the grains of wheat in one loaf of bread, or as the members in the human body, seeing they were all united to Christ, and had fellowship with him and one another. This is confirmed from the Jewish worship and customs in sacrifice. The apostle applies this to feasting with idolaters. Eating food as part of a heathen sacrifice, was worshipping the idol to whom it was made, and having fellowship or communion with it; just as he who eats the Lord's supper, is accounted to partake in the Christian sacrifice, or as they who ate the Jewish sacrifices partook of what was offered on their altar. It was denying Christianity; for communion with Christ, and communion with devils, could never be had at once. If Christians venture into places, and join in sacrifices to the lust of the flesh, the lust of the eye, and the pride of life, they will provoke God.I speak as to wise men,.... That is, what he was now going to say concerning the Lord's supper, and the communion which believers have with Christ in it, which they as Christians must have knowledge of; and concerning the participation of the altar the Israelites had, who ate of the sacrifices of it, which many of them, being Jews, as such must know; and therefore being fully persuaded of the propriety and pertinency of the instances he was about to produce, and of the justness of his reasoning upon them, he appeals to the Corinthians, as men of wisdom and understanding in these things, and makes them themselves judges thereof:

judge what I say; consider and weigh the matter well, and you will discern and judge that what I say is proper and pertinent, just and right.