Isaiah 9:6 is a great prophetic text and the promise of Jesus - The Messiah, The Christ, The King, The Savior.
“For to us a child is born, to us a son is given, and ... he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.” The Christmas Season is a season of joy because this promise was fulfilled in the birth of Jesus. He is the Forever Father & the Ruler of Peace.
He is the Extraordinary Advisor with supreme wisdom. He is the Powerful God. Jesus said it himself "I and the Father are One!" See John 10:30 and John 14:9
Jesus came, He lived, He died on the cross for our sins, He was buried in a tomb, the third day He rose from the dead, He appeared to many and then ascended - and just like he kept the promise of His first coming He will keep the promise of His coming again!
John 14:3 J. B. Phillips translation states Jesus' words like this: "It is true that I am going away to prepare a place for you, but it is just as true that I am coming again to welcome you into my own home, so that you may be where I am."