For thy mercy is great unto the heavens ... - See this explained in the notes at Psalms 36:5.

I will praise you, O Lord, among the people: I will sing to you among the nations. For your mercy is great to the heavens, and your truth to th…

For your mercy [is] great unto the heavens
Which denotes the exceeding greatness and largeness of it; as it is in th…

By lively faith, David's prayers and complaints are at once turned into praises. His heart is steadfast; it is prepared for every event, resting fi…