Hebrews 10:26 For if we sin wilfully after we have received the knowledge of the truth, there no longer remains a sacrifice for sins
How many times did you try to pretend to say sorry when you were very young? How many of those times did your parents or guardians catch you out and demand a real apology?
I know I could not get things past my parents when I was young and nowadays I have learned never to want to get things past them!
God wants us to be at the stage where we never want to try and hide anything from Him either. Not just because He sees everything we do but because it makes our apology of no effect when we do!
God wants us to be honest and open with Him. Simple!