This essay argues that the common understanding of imperial divine sonship among biblical scholars can be reframed by emphasizing the importance of adoption in Roman society and imperial ideology. A case study from the Gospel of Mark—the portrayal of Jesus' baptism—demonstrates some of the pay-off for reading the NT with a newly contextualized perspective on divine sonship. Through engagement with diverse sources from the Hellenistic and Roman eras, the dove will be interpreted as an omen and counter-symbol to the Roman eagle, which was a public portent of divine favor, election, and ascension to power.