How do people respond to the intimacy of an all-knowing God? Well, they squirm and run if Psalm 139 is any indication.
And how effective is the hiding? Totally ineffective. After using every trick in the book of darkness, speed and distance, we find a little tap on our shoulder of God saying, "I'm right here to lead and/or to hold." Squirm a bit with me for 7 minutes:
https://youtu.be/NePkRol0Nmc