"Daddy, can you bathe me? I want to play with you."
Daddy is sick. I am having a cold. I would love to play with you but I can't get too close to you.
When we are sick, we cannot get close to our loved ones.
In the same way, when we have sin in our life, we can get close to God. Sin is like sickness. It stops us from getting cozzy with God.