A huge a ha this week. I wonder why I didn't see it before?????
We know that Jesus and the main folks in the area spoke Aramaic. We know that Jesus called God, Abba - the Aramaic for daddy or papa, plus more intimate usages that led to beloved - such as between spouses, or to the children.
We know that in Aramaic bar means son - as Simon bar Jonah means Simon son of Jonah.
We know the person presented as an alternative to Jesus for crucifixion was Barabbas - bar Abba/son of God.
So we may have a reprise of the sheep and goat story from the Jewish tradition for atonement - the lamb is killed and blood goes to the altar and goat is released to go out into the wilderness to carry the people's sins.
Just considering this possibility as presented to my thought process by Spong's book I mentioned before.