For day and night - I found no relief even at night. The burden was constant, and was insupportable.
Thy hand was heavy upon me - Thy hand seemed to press me down. It weighed upon me. See Job 13:21; Psalm 39:10. It was the remembrance of guilt that troubled him, but that seemed to him to be the hand of God. It was God who brought that guilt to his recollection; and God “kept” the recollection of it before his mind, and on his heart and conscience, so that he could not throw it off.
My moisture - The word used here - לשׁד leshad - means properly “juice” or “sap,” as in a tree; and then, “vital-moisture,” or, as we should say, “life-blood.” Then it comes to denote vigour or strength.
Is turned into the drought of summer - Is, as it were, all dried up. I am - that is, I was at the time referred to - like plants in the heat of summer, in a time of drought, when all moisture of rain or dew is withheld, and when they dry up and wither. Nothing could more strikingly represent the distress of mind under long-continued conviction of sin, when all strength and vigour seem to waste away.
God intended the history of David's fall to serve as a warning that even those whom He has greatly blessed and favored are not to feel secure and neglect watchfulness and prayer. And thus it has proved to those who in humility have sought to learn the lesson that God designed to teach. From generation to generation thousands have thus been led to realize their own danger from the tempter's power. The fall of David, one so greatly honored by the Lord, has awakened in them distrust of self. They have felt that God alone could keep them by His power through faith. Knowing that in Him was their strength and safety, they have feared to take the first step on Satan's ground. PP 724.1
Even before the divine sentence was pronounced against David he had begun to reap the fruit of transgression. His conscience was not at rest. The agony of spirit which he then endured is brought to view in the thirty-second psalm. He says: PP 724.2
“Blessed is he whose transgression is forgiven, whose sin is
Blessed is the man unto whom the Lord imputeth not iniquity,
And in whose spirit there is no guile.
When I kept silence, my bones waxed old
Through my roaring all the day long.
For day and night Thy hand was heavy upon me:
My moisture was changed as with the drought of summer.” PP 724.3