Romans 1:20

For ever since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through His workmanship (all creation, the wonderful things that He has made), so that they are without excuse and without defense.

Man’s creation is in the image of God, but without God, man does not have the full wisdom and insight of the creator or creation.  God knows down the very cell how everything is made.  A man couldn’t see a cell until the invention of the microscope.  The workmanship of God and His creation stand as a witness to His divine power.