So, most people equate going to church with meeting with God. Many people do not meet with Him during the week, in between services, so church becomes very important to them. In fact,  it becomes the entire focal point of their Christianity. Their spirituality is completely dependant on their church. The problem is, if they do not meet with their God on a daily basis - if they only wait for their "Moses" to come down off the mountain to deliver God's word to them, if they aren't hearing from God for themselves, personally, then they will not be able to recognize His voice, His presence (or lack thereof) at church. In other words, they are easily deceived into thinking a religious ceremony, or service if you will, using his name and his Word, is the same as meeting with Him. When they believe their church is God, or of God, when they believe their church is how or where God meets them, they over rely on their church and they put it on a level it isn't. Of course this isn't referring to churches where God actually DOES meet with them, where His presence is welcomed and hungered for, no, I'm referring to churches where they prefer endless religious rituals void of His presence. If this is the case, it produces two results (there's more, but for now I'll focus on these two).
1) If you criticize or point out error in their doctrines/beliefs, or you disagree with pretty much any aspect of their "services", they get very angry and resentful and will usually cease to fellowship with you. You're given the "left foot of fellowship" instead of the "right hand of friendship".
2) They equate their pastor to be infallible in all he decides and teaches. This means they believe God is speaking to them through their pastor, even when he is not. It also means the pastor cannot, nor should not ever be corrected. This is how cults are run. Pastors end up demanding every one but themselves remain humble and teachable....meaning they must accept all the pastor teaches as Gospel. Very dangerous for the people and the pastor. We are not infallible and we are not meant to be treated this way. Our egos cant handle it.