In Acts 15 there was much debate about certain customs within Jewish traditions, such as circumcision. The Bible says these men had a long debate over this topic, certain people believed in order to enter into heave they must first be circumcised. There are times we need to be prepared to give an account for what we believe and why believe it (we call this apologetics), and the Apostles set a great example of this because they never once backed away from this conversation. I encourage each believer to know why you believe what you believe, and it's super important to know that we are saved through the grace of the Lord Jesus." Nothing less and nothing more!