John 3:20 For everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed.
The sad truth about our lives is that we tend to try and hide things when we do not do them correctly; we tend to hide in the dark so they will not be found out!
Doing anything against God is just not going to work because God does not need a flashlight or daytime to see what we do wrong, He sees it plain as daylight.
God wants us to be open and honest with Him so we can ask for forgiveness knowing that we are telling Him the truth so we can expect the forgiveness He has promised us.
Stay in the light by doing as much as possible with God and not trying to leave Him out of everything.