There is a new book out that helps to answer that question. It was written by a WTS Ph.D. graduate and associate professor of church history at Covenant Theological Seminary and is meant to be a popular treatment of the distinctives of Presbyterianism. I think I’m going to get a copy for my daughters since I think it’s important for them to know why we are Presbyterians. This is also a great resource for a new members class. You might want to mention it to your pastor. Click the graphic to go to the WTS Bookstore to order a copy.