Before Jesus was born or even if he had never existed—another human being was already proclaimed Son of God and, indeed, God Incarnate within the same first common-era century and within the same Mediterranean world. In fact, almost all the sacred terms and solemn titles that we might think of as Christian creations or even Pauline inventions were already associated with Caesar Augustus, the first undisputed ruler of the Roman Empire, from 31 BCE to 14 CE.
Augustus was Divine, Son of God, God, and God from God. He was Lord, Liberator, Redeemer, and Savior of the World—not just of Italy or the Mediterranean, mind you, but of the entire inhabited earth. Words like "justice" and "peace," "epiphany" and "gospel," "grace" and "salvation" were already associated with him. Even "sin" and "atonement" were connected to him as well. …
All those assertions, terms, and titles were at home within Roman imperial theology and incarnated in Caesar the Augustus before they ever appeared in Pauline Christian theology and were incarnated in Jesus the Christ. (The First Paul: Reclaiming the Radical Visionary Behind the Church’s Conservative Icon, pages 93, 94, by Marcus Borg and John Dominic Crossan, HarperOne 2009)