1 Corinthians 8:4
Concerning eating things offered to idols, we know that an idol is nothing in the world, and that there is no other God but one.
1 Corinthians 10:19-20
What then do I say? that an idol sacrifice is any thing, or that an idol is any thing?
1 Timothy 4:1
But the Spirit says expressly, that in the last times some shall apostatize from the faith, attending to lying spirits and doctrines of demons,
Revelation 9:20
And the rest of men, who were not killed with these plagues, did not change their minds [to turn] from the works of their hands, not to worship demons and idols of gold and silver and brass and stone and wood, which cannot see nor hear nor walk,