'Food Sacrificed To Idols' in the Bible

Now concerning food sacrificed to idols, we know that "we all have knowledge." Knowledge puffs up, but love builds up.

Therefore, concerning the eating of food sacrificed to idols, we know that "an idol [is] nothing in the world" and that "[there is] no God except one."

But this knowledge [is] not in everyone. But some, being accustomed until now to the idol, eat [this food] as food sacrificed to idols, and their conscience, [because it] is weak, is defiled.

For if someone should see you who has knowledge reclining for a meal in an idol's temple, will not his conscience, [because it] is weak, be strengthened so that [he] eats the food sacrificed to idols?

Therefore, what am I saying? That food sacrificed to idols is anything, or that an idol is anything?