“Behold Israel after the flesh: are not they which eat of the sacrifices partakers of the altar?”
King James Version (KJV)
10:18 Consider Israel after the flesh - Christians are the spiritual Israel of God. Are not they who eat of the sacrifices partakers of the altar - Is not this an act of communion with that God to whom they are offered? And is not the case the same with those who eat of the sacrifices which have been offered to idols?
1Co 10:18 Behold Israel after the flesh. The natural Israel, in contrast with the spiritual Israel, the church. Are not they which eat of the sacrifices partakers of the altar? A part of the sacrifice was eaten by the offerers and their friends, and as a part was burnt on the altar, as an offering to God, they were supposed to be partakers with God in the feast. So, too, those who partook of an idol feast, would be worshipers of the idol.