1 Corinthians 8:4
Now concerning eating things sacrificed unto 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 do I say then? that an idol is any thing, or that which is sacrificed to an idol is any thing?
1 Timothy 4:1
NOW the Spirit speaketh expresly, that in the latter days some will apostatise from the faith, giving heed to spirits of delusion, and doctrines of devils;
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: