Christ himself he identified with Mithra, and gave Him his dwelling in the sun.
He assumed to be the Paraclete promised by Christ, who should guide men into all truth, and claimed that his "Ertang," a sacred book illustrated by pictures of his own painting, should supersede the New Testament.
Such pretensions were not likely to be tolerated by the Christian community; and Manes had not put them forward very long when he was expelled from the church and forced to carry his teaching elsewhere.
Under these circumstances he is said to have addressed himself to Sapor, who was at first inclined to show him some favor; but when he found out what the doctrines of the new teacher actually were, his feelings underwent a change, and Manes, proscribed, or at any rate threatened with penalties, had to retire into a foreign country.
The Zoroastrian faith was thus maintained in its purity by the Persian monarch, who did not allow himself to be imposed upon by the specious eloquence of the new teacher, but ultimately rejected the strange amalgamation that was offered to his acceptance.

It is scarcely to be regretted that he so determined.

Though the morality of the Manichees was pure, and though their religion is regarded by some as a sort of Christianity, there were but few points in which it was an improvement on Zoroastrianism.

Its Dualism was pronounced and decided; its Trinitarianism was questionable; its teaching with respect to Christ destroyed the doctrines of the incarnation and atonement; its "Ertang " was a poor substitute for Holy Scripture.

Even its morality, being deeply penetrated with asceticism, was of a wrong type and inferior to that preached by Zoroaster.