The Gospel of JOHN: 

JOHN SHOWS THE BROODING WOOING JESUS, SAYING: THIS IS GOD, IN HUMAN GARB!
THE SUPREME WORD BECAME THE SUPREME PERSON.

THE FEASTS OF JOHN | Book by Dan Fleming
 In the book of John, Jesus taught the meanings of the Old Testiment FEASTS as they were being celebrated [in chronological order].   

For the Church:  Observe the Passover by the Lord's Supper
God forshadowing of the Christ coming [incarnation, John 1:14].