C.S. Lewis wrote in his book ‘Mere Christianity’; “I find a good many people have been bothered by what I said in the last chapter (titled “Is Christianity Hard or Easy”) about Our Lord’s words, “Be ye perfect.” Some people seem to think this means “Unless you are perfect, I will not help you”; and as we cannot be perfect, then, if He meant that, our position is hopeless. But I do not think He did mean that. I think He meant “The only help I will give is help to become perfect. You may want something less: but I will give you nothing less.”
Let me explain. When I was a child I often had a toothache, and I knew that if I went to my mother she would give me something which would deaden the pain for that night and let me get some sleep. But I did not go to my mother—at least not until the pain became very bad. The reason I did not go was this. I did not doubt she would give me the aspirin; but I knew she would also do something else. I knew she would take me to the dentist the next morning. I could not get what I wanted our of her without her getting something more which I did not want. I wanted immediate relief from pain: but I could not get it without having my teeth set permanently right. And I knew those dentists; I knew they started fiddling about with all sorts of other teeth which had not yet begun to ache. They would not let sleeping dogs lie; if you gave them an inch they took and ell (right angled extension to a building).
Now, if I may put it that way, Our Lord is like the dentists. If you give Him an inch, He will take an ell. Dozens of people go to Him to be cured of some one particular sin which they are ashamed of (like immoral behavior(#) or physical cowardice) or which is obviously spoiling daily life (like bad temper or drunkenness). Well, He will cure it alright: 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.
That is why He warned people to “count the cost” before becoming Christians. “Make no mistake,” He 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. You have free will, and if you choose, you can push Me away. But if you do not push Me away, understand that I am going to see this job through. Whatever suffering it may cost you in your earthly life, whatever inconceivable purification it may cost you after death, whatever it cost 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.
And yet—this is the other and equally important side of it—this helper who will, in the long run, be satisfied with nothing less than absolute perfection, will also be delighted with the first feeble, stumbling attempt you make tomorrow to do the simplest duty. As a great Christian writer (George MacDonald) pointed out, every father is pleased at the baby’s first attempt to walk. . . he said,(#) ” God is easy to please, but hard to satisfy.”
(#) Changed from original wording/statement
(Posts with a preamble asterisk * are for a more general audience, and not specific to teachings of the Church of Jesus Christ of Latter-day Saints.)

