Psalms 32:3

Psalms 32:3. When I kept silence, my bones waxed old through my roaring all the day long.

Sin was in his heart but he would not confess it. He was silent before God in hardness of heart; and then his sorrow grew worse and worse, till not only his flesh began to fail, but his bones - the most solid part of his frame, began to grow old, too. He felt like a man prematurely aged, melting away into the grave.