Man can’t figure it all out

I’ve had Christians mock the idea that there are mysteries concerning God, who seem to think they’ve got Him all figured out. But, just look at the life which makes living organisms living. What is this life? Man can observe it, but he can’t produce it or even begin to understand what it is. But God knows what it is. He created it. There are no mysteries with God, nothing is a mystery for Him. You don’t need to fully comprehend something before acknowledging it exists.