1 Corinthians 10:18

Behold Israel after the flesh: have not they that eat the sacrifices communion with the altar?

"The question is not the intention of the actor, but the import of the act, and the interpretation universally put upon it."[28] Paul thus removed the evaluation of idol worship altogether from the consideration of any "intention" in the heart of the worshiper, the act itself being universally understood as worship either of God or of idols. Here again the question of "What is worship?" demands consideration; and it is a principle laid down dramatically in Scripture that worship is "an action," not some kind of subjective feeling. For full discussion of this see in my Commentary on Acts, pp. 208-210. The subjective feelings of Jewish worshipers made no difference whatever; if they brought their sacrifices, they had communion with the altar and were invariably accounted as worshipping God.