The revelation of Jesus Christ is best written by John who was the closest disciple to him so his account was eye witness or optic account

John presents Jesus as the Word which existed with God and was Hod , emphasizing of the pre existence of Jesus before his birth.

This word became flesh end dwelt amongst men even though he doesn’t fail to tell is that men rejected Him..Yet he was the light and the life of men.

Those that received him He gave them life. By this we see that he had both physical and spiritual life which he handed down to those who believed in Him.In Him was life. Kohn 1:4

Remember God breath into man before could be a living being. Gen 2:7

So Jesus pre existed in a spiritual body and later became a human body when He was born.John 1:14

So Jesus is the revelation of the invisible God since noan had seen Him. John 1:18 , 1 Ti 1:17. So Jesus cane into the world to show us what God is like because Gid is invisible. With our physical eyes we can’t see Him but with our faith we csn reach out to Him.untill He comes back. Rev 22

Also Jesus is the complete representation of the invisible God. John 14:8-9

Jesus Christ is also the special reason for creation.God created us to glorify Himself.

Jesus is the first born of every creation Col 1:15. The first born position of authority over all creation.He:s the priority. He has power to create all things by His word because He is God.