The Christian God is NOT simple.

[theVOID]

I don't think the proposition that we cannot understand God's plan necessarily means that He is more complex than the human mind.

If we cannot understand something it is because our mind is limited, God's intellect must be superior to our own if he does understand something.

I suppose someone could argue that we do not know Gods plan but if he told us we would understand, that however means we should be able to understand all of his actions and why he did everything he did which in turn means we should be able to make inferences about his plan from the order of events... I don't think too many theists would be willing to bite that bullet.

Also, isn't it mathematically true that complexity can be compressed into a simpler formula, like an algorithm which creates fractals?

Only the product is complex, the algorithm is simple. There are algorithms to compress complex data, it's what WinRAR does to files, however the amount of reduction is minimal, it's not the same as generating something by running an algorithm in which case if all the variables were fixed you could run it backwards - but if there are any truly random elements in the algorithm it would be impossible to take the complex thing and run it back to get the same algorithm so you can later extract it and get back to how it was again.

And anyway, if God knew what he wanted and then designed an algorithm to achieve what he wanted he still had a plan, something that I assume would be true if God existed, considering the evidence available all concludes something along those lines. However, the algorithm would only be the way he implemented his plan, unless he crafted an algorithm arbitrarily and ended up with the universe how it is that is, and if that is the case then God + algorithm > algorithm in terms of complexity so you've not made any ground..

Whatever the simplest thing is, which may be the cause for the universe, I think it's possible that it can be just as complex as the human brain because it already contains all the instructions for the complexity and self-organization that gradually evolves out of that system.

The difference is in the probability of each proposition being true which is extremely important when we are positing that something existed at s1 (the first state of affairs) as a brute fact. The more simple explanation, the state of affairs that requires the least amount of information to describe, is the most likely explanation all else being equal, because we are starting at s1 all else is necessarily equal.

You should agree I hope that we should believe that which is most likely true?