In your OP you said you were more concerned about this part. But lets look at what he said to the Corinthians two chapters earlier. I'm going to remove the more frivolous parts.
8:1 Now concerning things sacrificed to idols: We know that we all have knowledge. Knowledge puffeth up, but love edifieth.
2 If any man thinketh that he knoweth anything, he knoweth not yet as he ought to know; 3 but if any man loveth God, the same is known by him.
4 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.
5 For though there be that are called gods, whether in heaven or on earth; as there are gods many, and lords many; 6 yet to us there is one God, the Father, of whom are all things, and we unto him; and one Lord, Jesus Christ, through whom are all things, and we through him.
7 Howbeit there is not in all men that knowledge: but some, being used until now to the idol, eat as [of] a thing sacrificed to an idol; and their conscience being weak is defiled.
8 But food will not commend us to God: neither, if we eat not, are we the worse; nor, if we eat, are we the better.
9 But take heed lest by any means this liberty of yours become a stumblingblock to the weak.
10 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?*** See below
11 For through thy knowledge he that is weak perisheth, the brother for whose sake Christ died.
12 And thus, sinning against the brethren, and wounding their conscience when it is weak, ye sin against Christ.
13 Wherefore, if meat causeth my brother to stumble, I will eat no flesh for evermore, that I cause not my brother to stumble.
Paul states that idols are nothing, however even though made of stone or wood and cannot eat, speak, etc, there is a spirit behind them. They are housed in temples and in house altars. This is where worship is done to them. Part of that worship is sacrificing animals to them.
These should
not be eaten under any circumstance. Not only would it have been offered in worship to a lesser being (spirit) but the slaughter of it would not have been done correctly and this would mean that the blood wouldn't be properly drained out.
***One must ask oneself, why would a believer be in a heathen temple eating the sacrifices?
4 (four) Categories of rightful living were given by the head of the Church, James, and that included anything to do with idols.
This is from the letter that was supposed to be taken to the Gentiles who turned to G-d
29 You
must abstain from:
- food sacrificed to idols, ( (of meat), sacrificed to an image (or an idol).)
- from blood, ---
- from the meat of strangled animals, (killed without letting blood out)
- and from sexual immorality. (fornication, whoredom; met: idolatry)
You will do well to avoid these things.
Abstain - be far from, Keep away from
As you can see these tie in by their definitions to what Yeshua warned against.
But I have a few things against you, because some of you hold to the teaching of Balaam, who taught Balak to place a stumbling block before the Israelites so they would eat food sacrificed to idols and commit sexual immorality.Therefore repent!
By her teaching she misleads My servants to be sexually immoral and to eat food sacrificed to idols......and all the churches will know that I am the One who searches minds and hearts, and I will repay each of you according to your deeds.
And also your knowledge of what's right to eat and what isn't.