With regard to food sacrificed to idols, we know that “we all have knowledge.” ¹  Knowledge puffs up, but love builds up.

For if someone weak sees you who possess knowledge dining in an idol’s temple, will not his conscience be “strengthened” ¹  to eat food offered to idols?

And if I have prophecy, and know all mysteries and all knowledge, and if I have all faith so that I can remove mountains, but do not have love, I am nothing.