Prophetic utterances are in accord with the will of the Word and, in David's case it seems, a living relationship.
I read the majority of Psalms as contending for the Word. Pursuing righteousness and his will even when everything is seemingly against a person. EVEN when based off our situation it seems the Lord has turned his face from us.
Certainly you can see elements in the human life of the Word in the gospels that hearken back to previous utterances.
In my view it is important to note that being under the inspiration of the Lord is NOT the same thing as he himself. At least not in the flesh, which is what is being said here. This is the first time I've heard anyone say that this is Jesus "directly" praying through another person. I don't find that to be accurate. His presence can be seen as manifest in all prophetic utterances but beyond that?
He IS the word as I said, so it makes sense that all of the written Word his essence can be seen, but taking leaps that these are his prayers personally? I don't see that in scripture.
There is a bit more I'm scratching at, if anyone else can help me out thanks
That would be like saying that prayers that we pray as image bearers are Jesus "directly" praying through us...