1 Corinthians 10:20

But that what the Gentiles sacrifice, they sacrifice to daemons, and not to God: and I would not have you in communion with daemons.

Revelation 9:20

And the residue of mankind, who were not slain by these plagues, repented not of the works of their hands, that they should not worship demons, and idols of gold, and of silver, and of brass, and of wood, and of stone: 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 unbelievers, that the light of the gospel of the glory of Christ, who is the image of God, should not dart its bright beams 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
among whom the god of this world hath blinded the minds of the unbelievers, that the light of the gospel of the glory of Christ, who is the image of God, should not dart its bright beams upon them.
Revelation 9:20
And the residue of mankind, who were not slain by these plagues, repented not of the works of their hands, that they should not worship demons, and idols of gold, and of silver, and of brass, and of wood, and of stone: which can neither see nor hear, nor walk: