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 12:2
You people know that when you were [still unconverted] Gentiles, you were led astray to [worship] lifeless idols, however you were led [i.e., wherever you turned, you were being led into idolatrous practices].
Matthew 6:7
And when you pray, do not use worthless repetitions like the [unconverted] Gentiles, for they think their lengthy, repetitious wording [in prayer] is more likely to be heard [by God].
1 Corinthians 10:19-20
So, what am I saying? That an animal sacrificed to idols is [really] anything, or that an idol [itself] is anything?