10:21 Ye cannot drink the cup of the Lord, and the {s} cup of devils: ye cannot be partakers of the Lord's table, and of the table of devils.
(s) The heathen and profane people were accustomed to finish up and make an end of their feasts which they kept to the honour of their gods, in offering meat offerings and drink offerings to them, with banquets and feastings.
10:21 Ye cannot drink the cup of the Lord. So inconsistent are the two with each other that no man can commune with Christ who partakes of the feast of the demon.
And the cup of devils. The libations offered at the idol sacrifices. A part of the cup was poured on the altar, and a part drunk by the offerers. See Aeneid 8:273.
Table of devils. The table in the idol temple where a feast was spread.
10:21 Ye cannot drink the cup of the Lord, and the cup of devils - You cannot have communion with both.
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.
