John 1 1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 The same was in the beginning with God. 3 All things were made by him; and without him was not any thing made that was made. 4 In him was life; and the life was the light of men. 5 And the light shineth in darkness; and the darkness comprehended it not.
Curious is it not that this is there in the first book of the bible long before Jesus was born? The isrealites had no custom of God having a son and yet here in this verse he attributes creation of man as a shared thing. And yet, it is later revealed what this means
Authors later expand on things mentioned in their earlier works all the time. It's really not that curious.
