Is a famous lesson pontificated upon by almost every conservative pastor in America and abroad.
Kinda surprised you don't know about it.

-don't try to make this about me.... it's a point you are insisting upon. I'm familiar with all the Psalms.
You said >>
In the 51st Psalm David says he was conceived and born in sin.
It's a poetic way (hyperbole) of David claiming to be very wrong. It does not mean he was an illegitimate child born out of wedlock.
And I said-- that's an opinion, not a fact. It remains so. I don't care if every chicken farmer in Kansas agrees with every conservative pastor in America and every goat herder in Afghanistan..... it would still be an opinion.
David (in the 51st Psalm) is lamenting that he was conceived in sin..... which certainly can be a reference to an illegitimate birth. And that is what these film makers have seized upon (aka the topic of this thread). They press the point over and over and over. Why?
-because it is a Jewish story about a Jewish king and that is the Jewish tradition-- the common cultural, religious, historic and accepted belief about David-- and the line of David. It is
their belief. And it's their story. Christians are just telling it.
The producers have received praise for their production values and faithfulness to
Jewish traditions and the
Christian biblical narrative.
Kinda surprised you don't realize this.
But instead you want to press the point that in the 51st David's birth was legitimate I guess, without knowing a single thing about the circumstances, and while ignoring all the Jewish traditions and teachings and David's own words that say otherwise. Maybe you hold to the ideology that David is saying that all babies are born sinful, from conception? Is that what you are insisting?