You never went to a concert, or even saw one on TV. Now also imagine that you knew absolutely nothing about all the instruments in an orchestra-you couldn't tell a flute from a tuba or a violin from a piano. Also imagine that you know nothing about the history of classical music throughout the centuries or any of the great composers. Maybe you've heard a few of their names, but you have no idea who they were or what they did.
Yet they believe they really know about their faith based on a guy (their favorite pastor, evangelist or author maybe) "waving his hands around," so to speak (or maybe waving a Bible around). Worst of all, they don't even know very much about the very Word of God that can teach them. The Holy Spirit should be teaching them through the Word of God, but He's been replaced by a bizarre, mystical "genie in a bottle" who requires rock bands in order to "manifest himself" and who always demands more and more attention. And to make matters worse, these very Christians are gleefully unaware of their own ignorance. They believe their pastor really knows what he's talking about. Why? Because he said so! And all their (church) friends think so, too!
Ryan Reeves YouTube Channel has a great collection of videos about the history of the Christian Church and it's theology. Most are around 30 minutes or less. I've listened to many of these multiple times, because they're so interesting and good. Reeves is a Professor with a PhD in Historical Theology from Cambridge; basically, he's giving away college lectures for free!