"Each of us, to some degree, fools our friends and family about who we really are. But, it's impossible to do that with God. He knows each of us, deeply and specifically. He knows our thoughts before we think them, our actions before we commit them, whether we are lying down or sitting or walking around. He knows who we are and what we are about. We cannot escape Him, not even if we want to." p. 32
There's a lot we could chew on here, but I want to focus on the principle message. Despite the facade we sometimes construct for the people around us, God knows who we really are. THERE IS NO FOOLING HIM! Each of us falls somewhere on the spectrum, at any given time. We pretend to be someone we're not in order to make a good impression. Some project a pristine image in order to veil an imperfection, an insecurity, or in some cases, something more sinister. Have you ever changed your clothes more than once (or twice) because you were afraid of what someone else might think? Have you ever said something, or not said something, because you feared the response it would garner? Have you ever wanted the approval of someone so badly that you did something you never thought you would do? Have you ever compromised who you are, what you believe, for the acceptance of someone else...whether that someone's a parent, a spouse, a boss, a neighbor, a co-worker, a child. The list can be exhaustive...and so can the process of pretending. But what we forget is that no matter how "successful" we are at fooling other people, we can NEVER fool God.
Right now, I don't think it's important to try and conquer the "Why?" (Why do we pretend?) We'll save that battle for another day. For our purposes here, we just need to be conscious of our behavior and acknowledge the fact that God is all-knowing.