1 Corinthians 10:20

I mean that what the heathen sacrifice they sacrifice to demons, not to God, and I do not want you to be in fellowship with demons.

Revelation 9:20

But the rest of mankind, who were not killed by these plagues, did not repent of the works their hands had done, so as to give up worshiping demons and idols of gold, silver, bronze, stone, and wood, which cannot either see or hear or move;

2 Corinthians 4:4

In their case, the god of this world has blinded the eyes of the unbelievers, to keep the glorious light of the good news of Christ, who is the likeness of God, from dawning upon them.

Treasury of Scripture Knowledge

Summary

But I say, that the things which the Gentiles sacrifice, they sacrifice to devils, and not to God: and I would not that ye should have fellowship with devils.

Bible References

Sacrifice

2 Corinthians 4:4
In their case, the god of this world has blinded the eyes of the unbelievers, to keep the glorious light of the good news of Christ, who is the likeness of God, from dawning upon them.
Revelation 9:20
But the rest of mankind, who were not killed by these plagues, did not repent of the works their hands had done, so as to give up worshiping demons and idols of gold, silver, bronze, stone, and wood, which cannot either see or hear or move;