If you ask the average person how the story of Jesus begins, they will almost inevitably describe a starry night in Bethlehem, a manger, and a choir of angels. This is the classic Christmas story.
But if you open the Gospel of Mark—which historians universally recognize as the earliest of the four biblical gospels—that entire narrative is completely missing. There is no virgin birth, no wise men, and no Bethlehem. Instead, the story begins abruptly in the barren Judean wilderness with a rugged, eccentric prophet and a carpenter from Nazareth standing waist-deep in the Jordan River.
When we read Mark’s account of the baptism through a historical-critical lens, stripping away the theology of the later gospels, a fascinating picture emerges. Mark presents a profoundly different understanding of who Jesus was and exactly when he became divine—a view that early church theologians would later label as “Adoptionism.”

Let’s Drop “The Baptist”

Before looking at Jesus, we must first look at the man in the river. Tradition has trained us to call him “John the Baptist.” However, modern historical scholarship increasingly prefers a different translation: John the Baptizer.
This is not just academic pedantry; it is a necessary historical correction. To the modern ear, “John the Baptist” sounds like a denominational title. It unconsciously evokes images of a modern Protestant church with pews and a steeple. But the historical John was not a member of a religious denomination. He was a radical, apocalyptic Jewish ascetic living in the desert, anticipating the imminent end of the world.
In the original Greek, the text uses the participle ho baptizōn (the one baptizing) or the noun baptistēs (a person who baptizes). He was defined entirely by his action—submerging people in the Jordan River as a ritual of repentance to prepare for the coming judgment. Calling him “John the Baptizer” strips away centuries of church anachronisms and roots him firmly back in the gritty reality of first-century Judea.

The Missing Manger and the Adoption Motif

In Mark’s gospel, Jesus does not arrive on the scene trailing clouds of heavenly glory. He is simply introduced as “Jesus from Nazareth in Galilee.” He walks down to the river and stands in line with the rest of the Judean crowds to be washed by the Baptizer.
But as Jesus comes up out of the water, something cosmic happens:
“He saw heaven being torn open and the Spirit descending on him like a dove. And a voice came from heaven: ‘You are my Son, whom I love; with you I am well pleased.'” (Mark 1:10-11).
To understand what Mark is communicating here, we have to look at the theology of the early Christian movement. Many early Jesus-followers held an Adoptionist christology. Adoptionism is the belief that Jesus was born as an ordinary human being, but because of his supreme righteousness and obedience, God “adopted” him—choosing him to be the divine Son and the Messiah at a specific, pivotal moment in his life.
For the author of Mark, that moment is the baptism.

The Mechanics of the Coronation

Mark’s language in this scene is highly specific and steeped in ancient Jewish coronation imagery.
First, the voice from heaven is quoting Psalm 2:7 (“You are my son; today I have become your father”). In ancient Judah, this psalm was sung at the coronation of a new king. The Israelite king was not believed to be a literal demigod, but upon ascending the throne, he was metaphorically “adopted” by Yahweh as his earthly son to rule the nations. Mark is applying this royal coronation language directly to Jesus at the river.
Second, the movement of the Holy Spirit is aggressive. Some early Greek manuscripts of Mark use the preposition eis (into), meaning the Spirit did not just descend upon him, but entered into him. The baptism is the exact moment Jesus is empowered. It is only after this divine adoption that Jesus goes into the wilderness, defeats temptation, and begins performing miracles. In Mark’s narrative, Jesus the Galilean carpenter is transformed into Jesus the Son of God right there in the muddy waters of the Jordan.

The Shifting Christological Timeline

To see how unique Mark’s adoptionist view is, you only have to look at how the later gospel writers altered his timeline. In the ancient world, greatness was often retrojected backward. As the early church’s theology evolved, they pushed the moment of Jesus’ divine sonship further and further back in time:

1. Mark (c. 70 CE): Jesus is adopted as the Son at his baptism as an adult.
2. Matthew & Luke (c. 80–90 CE): That wasn’t early enough. They added the birth narratives, arguing that Jesus was the divine Son from the moment of his conception (the virgin birth).
3. John (c. 90–100 CE): Even conception wasn’t early enough. John opens his gospel by pushing Jesus’ divinity back to eternity past (“In the beginning was the Word, and the Word was with God…”).

Letting Mark Be Mark

When we read the Bible devotionally, there is a powerful temptation to create a “harmonized” gospel—a giant theological blender where we mix John’s eternal Word, Luke’s manger, and Mark’s baptism into one smooth story.
But when we do that, we build another Paper Calf. We silence the distinct, individual voices of the ancient authors.
The Gospel of Mark does not have the sophisticated, pre-existent incarnation theology of John, nor the miraculous nativity of Luke. And that is exactly what makes it so historically valuable. By letting Mark speak for himself, we catch a glimpse of the earliest stages of Christian thought: a raw, urgent narrative where a man steps into a river, the heavens are violently torn apart, and a carpenter is chosen by God to change the world.