'Unseen' in the Bible

He is the exact living image [the essential manifestation] of the unseen God [the visible representation of the invisible], the firstborn [the preeminent one, the sovereign, and the originator] of all creation.

For by Him all things were created in heaven and on earth, [things] visible and invisible, whether thrones or dominions or rulers or authorities; all things were created and exist through Him [that is, by His activity] and for Him.