The Lord sustains him on his sickbed; in his illness you restore him to full health. 4 As for me, I said, “O Lord, be gracious to me; heal me, for I have sinned against you!”
Spurgeon comments on Psalm 41:3-4 in the Treasury of David:
Grace is the best of restoratives; divine love is the noblest stimulant for a languishing patient; it makes the soul strong as a giant, even when the aching bones are breaking through the skin. No physician like the Lord, no tonic like his promise, no wine like his love.
Knowing God through His Word ... Day by Day 