“When I kept silence,
My body wasted away.
I was groaning all day long.
Day and night
Your hand was heavy upon me.
My strength was dried up
Like the heat of summer.
Selah”
Sickness and sinning were considered synonymous. When David was silently suffering his body was wasting away. He groaned the whole time, both day and night. The heavy hand of Yahweh was upon him. His strength was dried up as the heat of summer does. Once again, there is a pause for a musical interlude with the Selah.