What does Psalm 30:7 mean?

This verse presents a contrast. Previously the Lord had favored David. Symbolically, David and his kingdom were like a massive mountain: immovable, unshakeable, and mighty. David's complacent attitude of self-confidence (Psalm 30:6) interrupted that blessing. The same king who felt like a mountain was crushed to realize God was displeased.

Most likely, David's thinking is focused on the plague God sent after David arrogantly numbered the people (1 Chronicles 21:7–17). The plague distressed David greatly. Second Samuel 24:10 reports, "But David's heart struck him after he had numbered the people. And David said to the LORD, 'I have sinned greatly in what I have done.'" And verse 14 tells us, "David said to Gad [a prophet], 'I am in great distress. Let us fall into the hand of the LORD, for his mercy is great.'" Sin is a hard taskmaster, and misery is part of its payment.

Previously in this psalm, David commented that even God's judgment is merciful; since His love for His people outlasts His anger at their sin (Psalm 30:5). The next verses might echo the way David prayed when he realized the gravity of his sin (Psalm 30:1–3).