1 Corinthians 10:20

No: but this I say, that what the Gentiles sacrifice, they sacrifice to demons, and not to God.

Revelation 9:20

And the rest of the men, who were not killed by these plagues, yet repented not of the works of their hands, so as not to worship demons, and idols of gold, and of silver, and of brass, and of stone, and of wood; which can neither see, nor hear, nor walk:

2 Corinthians 4:4

among whom the god of this world hath blinded the minds of the unbelieving, so that the light of the glorious gospel of Christ, who is the image of God, doth not shine unto 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
among whom the god of this world hath blinded the minds of the unbelieving, so that the light of the glorious gospel of Christ, who is the image of God, doth not shine unto them:
Revelation 9:20
And the rest of the men, who were not killed by these plagues, yet repented not of the works of their hands, so as not to worship demons, and idols of gold, and of silver, and of brass, and of stone, and of wood; which can neither see, nor hear, nor walk: