1 Corinthians 8:4

As to the eating therefore of things sacrificed to idols, we know that an idol is nothing in the world, and that there is no other God but one.

1 Corinthians 10:20

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

Treasury of Scripture Knowledge

Summary

Wherefore the anger of the LORD was kindled against Amaziah, and he sent unto him a prophet, which said unto him, Why hast thou sought after the gods of the people, which could not deliver their own people out of thine hand?

Bible References

Which could

1 Corinthians 8:4
As to the eating therefore of things sacrificed to idols, we know that an idol is nothing in the world, and that there is no other God but one.
1 Corinthians 10:20
No: but this I say, that what the Gentiles sacrifice, they sacrifice to demons, and not to God.