Mike Bird posted this on his blog, offering it as a summary of Mark’s Christology:
The Marcan Jesus participates in the kyricentricity of Israel’s God. He is identified as a pre-existent heavenly figure who has come to earth, who carries divine authority, who embodies royal and priestly roles; and in his person, words, and deeds he manifests the holy presence, the redemptive purposes, and the cosmic power of the Lord of Israel.
Very little of that comes explicitly from Mark, and the statement that Mark identifies Jesus as a pre-existent heavenly figure who has come to earth is simply false.
I hope that Mike will offer some explanation of why he reads Mark the way that he does.