Matt 28:18; And Jesus came up and spoke to them, saying, "All authority has been given to Me in heaven and on earth.
2 Sam 12:11; "Thus says the LORD, 'Behold, I will raise up evil against you from your own household; I will even take your wives before your eyes and give them to your companion, and he will lie with your wives in broad daylight.
2 Sam 12:12; 'Indeed you did it secretly, but I will do this thing before all Israel, and under the sun.'"
2 Sam 12:13; Then David said to Nathan, "I have sinned against the LORD." And Nathan said to David, "The LORD also has taken away your sin; you shall not die.
2 Sam 12:14; "However, because by this deed you have given occasion to the enemies of the LORD to blaspheme, the child also that is born to you shall surely die."
2 Sam 12:15; So Nathan went to his house. Then the LORD struck the child that Uriah's widow bore to David, so that he was very sick.
2 Sam 12:16; David therefore inquired of God for the child; and David fasted and went and lay all night on the ground.
I notice in verse 15.. it says "The LORD struck the child".
2 Sam 12:17; The elders of his household stood beside him in order to raise him up from the ground, but he was unwilling and would not eat food with them.
2 Sam 12:18; Then it happened on the seventh day that the child died. And the servants of David were afraid to tell him that the child was dead, for they said, "Behold, while the child was still alive, we spoke to him and he did not listen to our voice. How then can we tell him that the child is dead, since he might do himself harm!"
2 Sam 12:19; But when David saw that his servants were whispering together, David perceived that the child was dead; so David said to his servants, "Is the child dead?" And they said, "He is dead."
Two things I find interesting about this story.
1. David sinned, but David didn't die. The baby did. Can our sins cause someone elses death?
2. 2 Sam 12:14; "However, because by this deed you have given occasion to the enemies of the LORD to blaspheme, the child also that is born to you shall surely die."
David commits adultery with another mans wife, and then has the man killed. But yet the thing God requires, is his babies life.
... why?, .. "you have given occasion to the enemies of the LORD to blaspheme".
I wonder how many times, some Christians by the way they live... give the enemies of the Lord... reason to blaspheme?
Rom 2:24; For "THE NAME OF GOD IS BLASPHEMED AMONG THE GENTILES BECAUSE OF YOU," just as it is written.
My friend, I will address only the first part of your post because the thing about David is an aside, and it's only speculation.
God's sovereignty or ours.....It's interesting how God gave dominion to man, in Genesis 1:28-30, then just three verses later, He rested from His work. Now we understand that God doesn't need to rest physically, so if you look at the word in the original, you see that He stopped working, He retired as it were, having given it over to man to continue...Genesis 2:2 Now it is up to man to continue the work of creation, ruling in the Earth, and expanding the garden to cover all the Earth. Not hard to see, is it?
Then Psalm 8
When I look at your heavens, the work of your fingers,
the moon and stars that you set in place —
5 (4) what are mere mortals, that you concern yourself with them;
humans, that you watch over them with such care?
6 (5) You made him but little lower than the angels,
you crowned him with glory and honor,
7 (6) you had him rule what your hands made,
you put everything under his feet —
8 (7) sheep and oxen, all of them,
also the animals in the wilds,
9 (8) the birds in the air, the fish in the sea,
whatever passes through the paths of the seas.
Psalm 8 says clearly that God put man in charge to "run the store"..
and again Psalm 115:16
16 Heaven belongs to Adonai,
but the earth he has given to humankind.
Again, its clear that man is in charge of the Earth...
Matt 28:18
And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.
Let's finish reading what Jesus said there....
19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world.
We see where Jesus passed on His authority to His disciples.
John 14:12
12 Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.
Remember where in Genesis 2:2 God rested...He ceased His labors, He retired....When Jesus said. " I go unto my Father." He was finished His work on Earth too...And passed to torch to us! He said the same on the cross.."It is finished"
Now its up to us to rule in the Earth, while Jesus is our advocate with the Father...