[MurphsLaw]

Are you asking a mere human to judge these two on the condition of their souls?

Based on how one adheres to their professed claoms to Christianity...absolutely.
Otherwise, are you now suggesting mere humans are incapable of judging the souls of other humans or themselves? Is that what you believe?
I dont think there is anything "mere" about that process at all... do you?

Throughout his life, David - a man after GOD's own heart, was always killing one enemy or another.
Will we see him in heaven?

You will for sure, and why not?
Now realize his Covenant with God came much earlier than Jesus, so he had a different set of rules to run witb... and being of the Chosen people and all that, God would certainly spare his natural branch, for sure.
Think of it this way, as such of a Chosen elect like that, very similar- or forerunner of- in a pre-Calvinist way, he had no free- will to avoid those bad things he did-
So he was pre-destined to commit them in the first place, not culpable.
And even still, David would express remorse and sorrow, begging God's mercy...
Unlike the 2 unrepentant knuckleheads I cited, who are very culpable in the New Covenant...

[Elsie]

I have a Book that the Catholics assembled for me, and it reads:

It is way above my pay grade to figure out what state a soul is in at the moment of death.

If I were a forgiving person; I might have to invent a place where souls can go - to get a second chance at redeeming themselves.

[Elsie]

So he was pre-destined to commit them in the first place, not culpable.

This bait sure LOOKS good. I wonder what it tastes like??