Listen to how C.S. Lewis says it in Mere Christianity:
“Our Lord is like the dentists. If you give Him an inch, He will take [a yard]. Dozens of people go to Him to be cured of some one particular sin which they are ashamed of… Well, he will cure it all right: but He will not stop there. That may be all you asked; but if once you call Him in, He will give you the full treatment.” 171
God says: “If you let me, I will make you perfect. The moment you put yourself in My hands, that is what you are in for. Nothing less, or other, than that… Whatever suffering it may cost you in your earthly life… whatever it costs Me, I will never rest, nor let you rest, until you are literally perfect – until my Father can say without reservation that He is well pleased with you, as He said He was well pleased with me. This I can do and will do. But I will not do anything less.” 172
Then Lewis shifts the metaphor to a home renovation: “Imagine yourself as a living house. God comes in to rebuild that house. At first, perhaps, you can understand what He is doing… But presently he starts knocking the house about in a way that hurts abominably and does not seem to make sense… The explanation is that He is building a quite different house from the one you thought of… You thought you were going to be made into a decent little cottage: but He is building a palace. He intends to come and live in it Himself.” 174
