" In this pre-Lukan tradition, Jesus was made the Son of God at the resurrection. This is a view Luke inherited from his tradition, and it is one that coincides closely with what we already saw in Romans 1:3–4. It appears to be the earliest form of Christian belief: that God exalted Jesus to be his Son by raising him from the dead. "

― Bart D. Ehrman , How Jesus Became God: The Exaltation of a Jewish Preacher from Galilee