The Tablet of Shamash, 900 B.C.
Carl Jung, on the symbolism of the Cross
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)