"And He lifted me out of the pit of destruction, etc." Did David really descend into a pit? Rather, David said, "I was already on my way down to the pit, and God did not let me fall." And so it says (Psalm 16:11), "You make known to me the path of life." Therefore it is said, "He lifted me out of the pit of destruction," and not only that, but He lifted me up to a high place, as it says (Psalm 18:34), "He made my feet like the feet of deer and set me secure on the heights."
Why did He do this for me? Because of my hope in Him. He did not desire sacrifices or offerings, but rather hope. They asked him, "How do we know that He did this for you?"
He said to them, "From the song that I sing." And He put a new song in my mouth. But aren't all the songs old? Rather, he said to them, "I was already going down to the pit of destruction, and I said to Him, 'Since You have brought me here, give me Your spirit.'
And so it says (Psalm 51:12), 'Restore to me the joy of Your salvation, and sustain me with a willing spirit.' For the holy spirit had been taken from him." He said to Him, "You give me Your spirit," and therefore it is said, "a new song."