'Sacrificed' in the Bible

Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us:

And concerning the things sacrificed to idols, we have known that we all have knowledge: knowledge puffeth up, but love buildeth up;

Concerning the eating then of the things sacrificed to idols, we have known that an idol is nothing in the world, and that there is no other God except one;

but not in all men is the knowledge, and certain with conscience of the idol, till now, as a thing sacrificed to an idol do eat it, and their conscience, being weak, is defiled.

for if any one may see thee that hast knowledge in an idol's temple reclining at meat -- shall not his conscience -- he being infirm -- be emboldened to eat the things sacrificed to idols,

What then do I say? that what is sacrificed to an idol is anything, or that an idol is anything?

and if any one may say to you, 'This is a thing sacrificed to an idol,' -- do not eat, because of that one who shewed it, and of the conscience, for the Lord's is the earth and its fulness: