1 Corinthians 10:28
But if anyone says to you, "This [food] has been offered as a sacrifice [to an idol]," do not eat it, for the sake of the person who pointed this out to you, and for conscience' sake ---
Matthew 6:31-32
Therefore, do not worry by asking, 'What are we going to eat?' or 'What are we going to drink?' or 'What are we going to wear?'
Romans 14:15
For if your brother is hurt [spiritually] by [your eating a certain] food, you are no longer acting lovingly [toward him]. Do not destroy [spiritually] the person Christ died for by what you eat.
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 8:10-13
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 10:26
For the earth and everything in it belongs to the Lord.