Here is an area where differing opinions were clearly permitted. We must obey our conscience and we must not cause others to sin against their conscience. We must not change our opinions unless we are convinced in our mind that change is true. You are not to change because someone wants you to change. You must be convinced of the truth from the Bible.
The conscience is our conviction that what we believe is either right or wrong. Everyone has a conscience. Your conscience is independent–meaning that it can cause guilt when you don’t want it to. It can have different results depending on individual standards. Our consciences can mature and change. What you thought was wrong at one time in your life, you may now believe is right and vise versa. Your conscience warns you or wrong, convicts of wrong, and celebrates the right.
Let me also say that just because we have a conscience, that does not mean our conscience is right. I may be fully persuaded in my own mind about a certain thing and be totally wrong. Our conscience needs constant adjustment toward compliance to God’s Word.
So whatever you believe about food, drink or special days— or whatever the issue—live consistently by that decision until God leads you from his word to adjust your conscience.
Anything else would be spiritually unhealthy. No matter what you believe concerning third level truths, be fully convinced it is Biblically true.