“The story of the Temptation clearly reveals the nature of the psychic power with which Jesus came into collision: it was the power-intoxicated devil of the prevailing Caesarean psychology that led him into dire temptation in the wilderness.
This devil was the objective psyche that held all the peoples of the Roman Empire under its sway, and that is why it promised Jesus all the kingdoms of the earth, as if it were trying to make a Caesar of him.
Obeying the inner call of his vocation, Jesus voluntarily exposed himself to the assaults of the imperialistic madness that filled everyone, conqueror and conquered alike.
In this way he recognized the nature of the objective psyche which had plunged the whole world into misery and had begotten a yearning for salvation that found expression even in the pagan poets.
Far from suppressing or allowing himself to be suppressed by this psychic onslaught, he let it act on him consciously, and assimilated it.
Thus was world-conquering Caesarism transformed into spiritual kingship, and the Roman Empire into the universal kingdom of God that was not of this world.” – Carl Jung, The Development of the Personality, CW 17, par. 309. See also C.G. Jung Letters, vol. 1, pp. 267f.