Do you know what the difference between C. S. Lewis' The Chronicles of Naria and J. R. R. Tolkien's The Lord of the Rings is?
The difference between The Lord of the Rings and The Chronicles of Narnia is this:
In The Lord of the Rings, there are many heroes. In The Chronicles of Narnia, everyone fails, consistently, and then Aslan shows up.
That is what biblical Christianity is: We are justified and saved from our sins, regenerated and born again from above, growing in grace and sanctification to become holy and more like Christ Jesus, yet we will fail again and again UNTIL Jesus returns.