Just as you cannot understand the path of the wind or the mystery of a tiny baby growing in its mother’s womb, so you cannot understand the activity of God, who does all things. (NLT)
One of the problems people have with believing in God is that they can't understand Him. People can't understand how a loving God allows bad things to happen. But the fact God is all-powerful and all-knowing means we can't understand Him. If we could then we would be God. And I don't want a God that I could fully understand, because that kind of God would be flawed. Faith is trusting what we don't understand.