In his first epistle to the Corinthians, apart from warning us about partaking in certain activities that have been admonished by God in the past, and were written about to serve as examples, Paul is addressing the controversy about eating meat sacrificed to pagan gods, where after the meats have been offered in ritual, they are then sold at the market to unsuspecting buyers. Can a Christian buy and eat such meats? Paul says, Yes. If you truly are unaware, or have no conscious of such rituals attached to the meat, it matters not what was done to it. Let’s say a Greek invited a Christian to his home or a Jewish man to his home, and they do not know that the meats were a part of any ritual, Paul tells us that it does not matter, these gods aren’t real, and you aren’t participating in the ritual itself. You don’t want to scandalize or make feel embarrassed by refusing to dine or eat with another just because what they believe. That’s why he says in verse 31, “Whether therefore ye eat or drink, or whatsoever ye do, do all to the glory of God.” It is our conscience, Paul says, that is the determining factor which God weighs our actions. This is also for any other thing, if you know it only to be of use for you to serve God in your heart and mind, it matters not where or what hath been done prior to you eating or receiving that thing.