1 Corinthians 8:4

As to the eating therefore of what is offered in sacrifice to idols, we know that the heathen deities have no real existence, and that there is but one God.

1 Corinthians 10:19-20

that the idol, or that what is offered in sacrifice to the idol, is a matter of consequence?

1 Timothy 4:1

Now the spirit says expresly, that in the latter times some shall abandon the faith, by giving credit to seducing spirits, and the doctrine concerning demons;

Revelation 9:20

As for the rest of the men who were not killed by these plagues, they did not repent of their evil actions, so as to forbear worshipping demons, and idols of gold and silver, and brass, and stone, and of wood: which can neither see, nor hear, nor walk:

Treasury of Scripture Knowledge

Summary

They sacrificed unto devils, not to God; to gods whom they knew not, to new gods that came newly up, whom your fathers feared not.

Bible References

Sacrificed

1 Corinthians 10:20
no, but that what the Gentiles sacrifice, they sacrifice to demons, and not to God: and I would not have you partake of the sacrifices of demons.
1 Timothy 4:1
Now the spirit says expresly, that in the latter times some shall abandon the faith, by giving credit to seducing spirits, and the doctrine concerning demons;
Revelation 9:20
As for the rest of the men who were not killed by these plagues, they did not repent of their evil actions, so as to forbear worshipping demons, and idols of gold and silver, and brass, and stone, and of wood: which can neither see, nor hear, nor walk:

Not to god

1 Corinthians 8:4
As to the eating therefore of what is offered in sacrifice to idols, we know that the heathen deities have no real existence, and that there is but one God.
1 Corinthians 10:19
that the idol, or that what is offered in sacrifice to the idol, is a matter of consequence?