1 Corinthians 10:24-30

"Let no one seek his own good, but the good of his neighbor. Eat whatever is sold in the meat market without raising any question on the ground of conscience. For 'the earth is the Lord's, and the fullness thereof.' If one of the unbelievers invites you to dinner and you are disposed to go, eat whatever is set before you without raising any question on the ground of conscience. But if someone says to you, 'This has been offered in sacrifice,' then do not eat it, for the sake of the one who informed you, and for the sake of conscience—I do not mean your conscience, but his. For why should my liberty be determined by someone else's conscience? If I partake with thankfulness, why am I denounced because of that for which I give thanks?"

Christian liberty is not about Christians being allowed to do whatever they want to do. Doing what you want is seeking your own good (or at least your own perceived good). That is what is natural, but it isn't Christian liberty. Christian liberty involves your willingness to seek the good of your neighbor instead of your own good.

Consider the inspired example. There is nothing wrong with eating any meat even if it was formerly involved in a temple sacrifice. If someone gives you some meat, you are allowed to eat it without any concern about its origin. But if you are with someone else and they are bothered by the idea of eating meat once offered to idols, you should not eat it. "But why should I do that? I am right. He is wrong." Yes, but you want to do him good. Abstaining is the right thing to do.

What are the universal principles?

1. What you want isn't the most important thing.
   
2. It might be right for you to temporarily surrender a perfectly acceptable practice for the good of another.
3. Offending the conscience of another Christian can damage them.
4. Surrendering your rights is not the same thing as allowing your conscience to be manipulated.
5. While you should seek to avoid offending individuals, you shouldn't let public opinion rule over you.