First of all there are several points you must understand that you are a bit confused on
God gave us free-will to glorify himself. If we had no free will, then we would be robots. If you had kids would you want them to be robot kids? I wouldn't either. God loves us so much he accepts our faults even though we are unworthy.
Suffering- You might be under the impression that God created it. Well your wrong. Suffering came about when Eve traded an eternity with God over a piece of fruit. Now if you did something very bad, would your parents punish you or would they say, "Oh, its OK son, I'm not going to do anything about it. Here's a dollar go get something at the candy store?" The truth is God is going to get rid of suffering too (We are simply bound by time and have not conceived its happening yet).
Read the thread before posting please.
The Devil- You must understand God's concept of time. He isn't bound by it. You are. God (in our time) is going to destroy evil. (In our time) It just hasn't happened yet. Read Revelation, chapter 21 or 20 or something like that.
"In our time" is meaningless. Because your god is out side of time, he cannot have any effect on any specific point in time. So when he gets around to destroying the devil, he would be doing it at the creation of the universe and every moment after until it is nothing but black holes and virtual particles.
Is it a test?-You are slightly placing this out of context. God tests you for you not Him. Yes, he knows the answer but you need to choose it. If you choose what is right (and you are a Christian) you will be rewarded in heaven.
Who or what he is testing is irrelevant. The point is that the test itself is pointless and not really a test.
On regards to your other things, it is sadly impossible to prove any God exists scientifically. In order to do that you must be greater than or equal to the thing you are trying to prove(ex: a mathematician prooving a math equation. The mathematician is greater than the math equation.).
"Greater" is an arbitrary value. Mathematicians can describe the fundamental forces of the universe and even create new geometries and separate physical laws. In my opinion the math is greater then the mathematician.
However, we can give evidence.
But you just said that god was beyond science. If even a scrap of "evidence" exists for anything then it is subject to the scientific process. And the bible fails miserably when compared to reality.
The Bible is the most accounted for book in history. We have more manuscripts of it than any other book of that age. The only thing that comes close is the Illyad, which we are missing many many lines from. Furthermore, each of the manuscripts are all 95% identical to eachother, with the only differences being spelling, or things like saying Jesus Christ instead of Christ Jesus.
So? Popularity proves nothing. Slavery was almost universal for most of "civilized" human history, but that doesn't make it morally sound today.
Also, Jesus had thousands upon thousands of witnesses in history. Saying you don't believe in Jesus is like saying you don't believe in your grandmother. It is just simply inconceivable. Now that we have established Jesus is real. There are either two options to go for. Either Jesus was insane or He was indeed the Son of God. Well, Jesus was seen performing miricles (many times). These are also in account. So what if Jesus was impowered by Satan? First of all if this was true, then he probably wouldn't have cast out all those demons in people.
1.All his witnesses died before the new testament was compiled, and orally transmitted stories are easily injected with exaggerations.
2. Just because we reject him as a son-of-a-god-who-is-his-own-father-but-also-a-ghost does not mean we reject his existence and historical significance.
3.There are several other options besides truth and insanity:
-He was honestly mistaken. He truly believed that he was the son of god and wanted to help people
-He was told he was the son of a god and believed it, most likely by his parents.
-He be tollin'!
There are also over a hundred prophecies that Jesus fufilled in the old testament, hundreds of years before Jesus was even born. Jesus fufilled every one of them, too.
We learned about this in 7th grade. It's called foreshadowing. Every book has it.
On to the Omni stuff. I would like to point out that I can't understand God. No one can. But Omnipotece doesn't mean God can do everything.
So: "a=/=a"?
Omnipotence means god can do everything, and because he is supposed to exist outside of reality (and he does, its called fantasy, I hang out with Darth Vader and Tinkerbell when I'm there), then he would not be bound by logical paradoxes like you state:
God cannot lie. God cannot tell you what shape yellow is. God cannot tell you where a circle starts. To do so would involve things against his nature. God knows everything, but this does not mean he loses omnipotence. If you threw a rock in liquid water, you would be able to guarentee it would make a splash. This does not make you lose any power. If you were breathing you could choose how you wanted to breath. If you wanted to breath softly, then you do. This doesn't mean you could have breathed normally. You chose not too.
So you get to personify and put limits on a being that you claim cannot be understood or proven to exist, based on a book that contradicts reality and is as bipolar in writing as the god descried by it.
Amazing.