The endeavour of the son to put himself in place of the father god, appeared with greater and greater distinctness. With the introduction of agriculture the importance of the son in the patriarchal family increased. He was emboldened to give new expression to his incestuous libido which found symbolic satisfaction in labouring over mother earth. There came into existence figures of gods like Attis, Adonis, Tammuz, and others, spirits of vegetation as well as youthful divinities who enjoyed the favours of maternal deities and committed incest with the mother in defiance of the father.
But the sense of guilt which was not allayed through these creations, was expressed in myths which visited these youthful lovers of the maternal goddesses with short life and punishment through castration or through the wrath of the father god appearing in animal form. Adonis was killed by the boar, the sacred animal of Aphrodite; Attis, the lover of Kybele, died of castration. The lamentation for these gods and the joy at their resurrection have gone over into the ritual of another son which divinity was destined to survive long.
When Christianity began its entry into the ancient world it met with the competition of the religion of Mithras and for a long time it was doubtful which deity was to be the victor. The bright figure of the youthful Persian god has eluded our understanding. He represented the son who carried out the sacrifice of the father by himself and thus released the brothers from their oppressing complicity in the deed. There was another way of allaying this sense of guilt and this is the one that Christ took. He sacrificed his own life and thereby redeemed the brothers from primal sin.
The theory of primal sin is of Orphic origin; it was preserved in the mysteries and thence penetrated into the philosophic schools of Greek antiquity. Men were the descendants of Titans, who had killed and dismembered the young Dionysos-Zagreus; the weight of this crime oppressed them. In the Christian myth man’s original sin is undoubtedly an offence against God the Father, and if Christ redeems mankind from the weight of original sin by sacrificing his own life, he forces us to the conclusion that this sin was murder. And if this sacrifice of one’s own life brings about a reconciliation with god, the father, then the crime which must be expiated can only have been the murder of the father.
Thus in the Christian doctrine mankind most unreservedly acknowledges the guilty deed of primordial times because it now has found the most complete expiation for this deed in the sacrificial death of the son. In the same deed which offers the greatest possible expiation to the father, the son also attains the goal of his wishes against the father. He becomes a god himself beside or rather in place of his father. The religion of the son succeeds the religion of the father. As a sign of this substitution the old totem feast is revived again in the form of communion in which the band of brothers now eats the flesh and blood of the son and no longer that of the father, the sons thereby identifying themselves with him and becoming holy themselves.
Sigmund Freud – Totem and Taboo