I understand that perspective. It's kind of like the doctrine of the trinity. God is three and one. Doesn't make perfect logical sense in our finite minds, but we accept the mystery of it because the facts are revealed. I really do get that.
BUT, just consider the one phrase you presented: "We know that God either causes or ordains all things."
What exactly does that mean? Because if you mean by "ordains" that God allows or permits evil, then we have no disagreement...and since you didn't just simply say, "God causes all things" I think you recognize the difficulty of such a position.
Ordains means, strictly, that God does allow or permit evil. But it goes further than that too. It means that His purposes are served through evil and that nothing--not even the murderous regimes of Hitler or Stalin--are accidental or out of control.
It means, as someone else has said, "there are no rogue atoms in all the universe."
Ordains means that, in some way and without sinning, God can and does use evil things, evil persons, etc. to accomplish His purposes for His world.
No where in scripture do we have conclusive evidence that God has "caused" or "determined" all things. We also know, as you pointed out, that God doesn't cause sin, or even tempt men to evil. So, why adopt a deterministic theology by which God is casually determining even the thought of such things as the rape and murder of a child? Why not do as you have already done and simply appeal to mystery with regard to the self-determined choices of sinful man and leave it at that?
Do you understand my question?
I have to say that your statement "No where [
sic.] in scripture do we have conclusive evidence that God has "caused" or "determined" all things" is shockingly and staggeringly surprising. I can only take this statement to mean that you do not believe God to be sovereign over all things. Your statement suggests that there are things which God does not control. This is a shocking admission from you.
Paul clearly states "from him and through him and to him are all things." Jesus says "All things have been handed over to me by my Father, and no one knows who the Son is except the Father." John says "The Father loves the Son and has given all things into his hand." Paul, again, says "In him we have obtained an inheritance, having been predestined according to the purpose of him who works all things according to the counsel of his will"
The pagan king Nebuchadnezzar says of God:
...his dominion is an everlasting dominion,
and his kingdom endures from generation to generation;
35 all the inhabitants of the earth are accounted as nothing,
and he does according to his will among the host of heaven
and among the inhabitants of the earth;
and none can stay his hand
or say to him, “What have you done?”
God Himself declares:
8 “Remember this and stand firm,
recall it to mind, you transgressors,
9 remember the former things of old;
for I am God, and there is no other;
I am God, and there is none like me,
10 declaring the end from the beginning
and from ancient times things not yet done,
saying, ‘My counsel shall stand,
and I will accomplish all my purpose,’
11 calling a bird of prey from the east,
the man of my counsel from a far country.
I have spoken, and I will bring it to pass;
I have purposed, and I will do it.
So, your statement, while shocking, is totally and utterly false. And, your statement reveals much about what you think of God.
Now, as to the second part of the question, I do not adopt a deterministic theology. Determinism, classically speaking, is suggesting impersonal forces are determining everything--mother nature and such. That is not how the absolute sovereignty of God is portrayed in the Bible. The reason--perhaps the only reason--that the "determinism" (using your words) of Calvinism is not based on an impersonal mechanism or force. It is based on a holy and loving God who knows more than us and who actively works all things together for our good and His glory.
There is a pastor-acquaintance on Twitter who said "I am gratefully bound to the free will of God." This pretty much sums up the reformed position.
We do not see God as an impersonal, deterministic force, as you would suggest. We see Him as a holy and loving father that is always looking out for our good--even by bringing evil into our life to glorify Himself by revealing Himself more deeply to us through our suffering.
So, why don't I adopt your theology in this area? Because it is patently unbiblical.
The Archangel