God is knowable and He has revealed himself with general revelation (creation..Rom 1:20) and with specific revelation through his written word. The entire Christian life is a process of knowing what God is like. The more time that is spent with him, the more one can know about him. Man will never be able to know everything about Him because if that were possible than man would be God. God is knowable, but he is so awesome, man’s finite minds can not explain him completely in man’s limited vocabulary.
Isaiah 40:18 To whom then will you liken God? Or what likeness will you compare with Him?
Anytime that you go through something less then pleasant in your life, and you don’t understand why, remember that God knows and is in complete control. Lean on God (seek and spend time with Him) through those times so you can know Him better.