'Things Sacrificed to Idols' in the Bible

Now concerning things sacrificed to idols: We know that we all have knowledge. Knowledge puffeth up, but love edifieth.

Concerning therefore the eating of things sacrificed to idols, we know that no idol is anything in the world, and that there is no God but one.

For if a man see thee who hast knowledge sitting at meat in an idol's temple, will not his conscience, if he is weak, be emboldened to eat things sacrificed to idols?