The reality of evil and its incompatibility with good cleave the opposites asunder and lead inexorably to the crucifixion and suspension of everything that lives.
Since ‘the soul is by nature Christian’ this result is bound to come as infallibly as it did in the life of Jesus: we all have to be ‘crucified with Christ,’ i.e., suspended in a moral suffering equivalent to veritable crucifixion.
Psychology and Alchemy
Christ Crucified Between Two Thieves Duccio di Buoninsegna
Yet, although the attributes of Christ (consubstantiality with the Father, co-eternity, filiation, parthenogenesis, crucifixion, Lamb sacrificed between opposites, One divided into Many, etc.) undoubtedly mark him out as an embodiment of the self, looked at from the psychological angle he corresponds to only one half of the archetype.
The other half appears in the Antichrist. The latter is just as much a manifestation of the self, except that he consists of its dark aspect.
Both are Christian symbols, and they have the same meaning as the image of the Saviour crucified between two thieves.
This great symbol tells us that the progressive development and differentiation of consciousness leads to an ever more menacing awareness of the conflict and involves nothing less than a crucifixion of the ego, its agonizing suspension between irreconcilable opposites.
The Tablet of Shamash, 900 B.C.
It seems to have been one of the most original intuitions of man that the right form to express the source of mana would be the cross….
It is an absolute irrational fact to me that vital energy should have anything to do with a cross or the number four.
I don’t why it is perceived in such a form; I only know that the cross has always meant mana or life power.
Dream Analysis, pages 363-366
(Cited in Jung and Christianity, by Murray Stein, Page 274)