And it came to pass that I read and ye shall learn of a pretty amazing book. Biblical scholar Bart D. Ehrman takes on the subject of how, in history, the notion of Jesus as god developed. Was it there from the beginning? How did it arise? What does it even mean? Was he considered divine by believers before conception, at conception, at baptism by John, when he died on the cross, when he rose from the dead, when he headed upstairs to the executive offices? And the answer? Yes.
As with many mysteries there is a paucity of physical evidence. One might consider Ehrman