Our carnal minds tend to believe that the unknown is to be feared and figured out. Scripture teaches that we will never have it all figured out while here on earth. 
I Corinthians 13:12 says “For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known.”
The unknown is a part of reality that God is present in. It isn’t a place for us to put faith in ourselves; instead it is an opportunity for us to trust God.