“how he used them” –interesting phrase to employ here.
For one thing, if Dovid HaMelech had a job to do, he would do it himself, not throw it onto his friend and a group of strangers (no matter how friendly).
Look into Yishai Chasidah’s “Ishei HaTanach” in English or Hebrew, “Footsteps of the Prophets” volume3?, the one that focuses on Dovid; any meforshim on Nach.
Hatzlacha.