I'm meditating in the prayer of Psalm 30:9-10:
9 “What is gained if I am silenced,
if I go down to the pit?
Will the dust praise you?
Will it proclaim your faithfulness?
10 Hear, Lord, and be merciful to me;
Lord, be my help.”
The Psalmist prays in a similar way in 6:4-5. In that passage, he appeals to the mercy of the Lord and argues that if he dies, he will no longer be able to praise the Lord. But in 30:9, he doesn't appeal to the mercy of the Lord and goes further in his argumentation adding the acknowledgment of His faithfulness. I'm confused in the sense that it seems that the psalmist is trying to manipulate the Lord with these arguments, instead of only praying for help as he does in verse 10.
What is the correct interpretation of verse 9?
Any help is appreciated.