I've gone to various churches for countlelss years. I've heard many sermons. The focus of each message seems to boil down to a few specific things. Although it is very subtly worded, it basically says, "In order to be saved, you have to believe some very specific things (the correct doctrine). God is a great and  wonderful loving God. If you believe these things, and say this specific prayer, then You can go to heaven when you die. (and it just so happens that this "correct doctrine" so happens to be the same as "we" (the church) believe.