1 Corinthians 8:4
Now concerning [the matter of] eating foods [once] offered as sacrifices to idols, we know that an idol is [really] nothing in the world [at all], and that there is only one God.
1 Corinthians 8:7
However, not every person knows this [truth]. For some people have been so used to an idol all this time that they still think of the idol [as a reality] when eating food that has been sacrificed to it. And their weak conscience becomes polluted. [Note: These people cannot seem to shake off the idea that somehow the idol is real, so feel guilty of wrongdoing when eating food sacrificed to it].
1 Corinthians 8:10
For if someone with a weak conscience sees you, who have [correct] knowledge [in this matter], eating in an idol's temple, will he not be encouraged to eat food sacrificed to idols?
1 Corinthians 10:27
Now if an unbeliever invites you for a meal and you decide to go, eat whatever is set in front of you without asking any questions for [your] conscience' sake [See verse 25].
1 Corinthians 10:20-21
[Certainly not!] But I am saying that the Gentile sacrifices are [really] offered to evil spirits and not to God. And I do not want you to have fellowship with evil spirits.
Revelation 2:20
But I have this against you, that you tolerate that woman [named] Jezebel, who calls herself a prophetess. She teaches and deceives my servants into [practicing] sexual immorality and into eating things sacrificed to idols.
Revelation 17:1-5
Then one of the seven angels, who had the seven bowls, came and spoke to me, saying, "Come [here]; I will show you the punishment [to fall] on the great prostitute who is situated on many bodies of waters.