This is the real meaning of Christmas: “The Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth” (John 1:14 ESV).
This does not mean God posed as a man for a few years, casting an illusion on everyone in order to influence them with well-spoken sermons.
It does not mean God sent his spirit into a man for a time, having found someone who was sufficiently humble to indwell for divine purposes.
It does not mean that God actually is a man who lives eternally on another plane but for a season he came to Earth to do things.
It also does not mean that Jesus was only a man who connected dots like no one before him and introduced some darn good principles to Western civilization.
It does not mean that a uniquely spiritual man called on divine power to perform marvelous works and speak with wisdom beyond the scope of mortal reason.
Those ideas are a bit easier to understand. The truth is beyond us. Christ Jesus, born as a child to a poor, virgin woman, was the Word of God from the beginning, both with God and actually God. The invisible, eternal God became a mortal man. That doesn’t make complete sense to us, but it is the only hope for ourselves and all the world.
Merry Christmas.