1 Corinthians 10:20

But. What, then, is the real import of all that has been said about the danger of having any form of contact with idols and their worship? Paul rejects the idea that the nothingness of idols, or the nothingness of things offered to idols, removes the objection to participation in the entertainments at idol temples.

Devils. Gr. daimonia, “demons.” In the LXX of Ps. 96:5 daimonia translates the Heb. elilim, which means literally, “nothings,” and in the LXX of Deut. 32:17 the Heb. shedim, “evil spirits,” “demons.” In the NT daimonia is always used of evil spirits (see Matt. 7:22; Mark 1:34, 39; 1 Tim. 4:1; etc. cf. Eph. 6:12). See on Mark 1:23; see Additional Note on Mark 1.

Fellowship with devils. Knowing the real nature of idol worship, that is communing with Satan and his evil angels, Paul urgently admonishes the Corinthians to avoid idolatry. Christians are solemnly dedicated to Christ; they belong to Him by creation and redemption, and they cannot give the least degree of sanction to a form of worship that would give honor to any being other than the one true God (see Ex. 20:3-5; Matt. 4:9, 10). Likewise it is wrong for Christians to allow their time or affections to be given to anything or any person in preference to God and His service. He must come first at all times, and His service must have first consideration always (see Matt. 22:37).