in the course of time the Avesta was subjected to many additions and
interpretations, called the Zend, which show degeneracy. A world of myth
and legend is crowded into liturgical fragments. The old Bactrian tongue
in which the Avesta was composed became practically a dead language.
There entered into the Avesta old Chaldaean traditions. It would be
strange if the pure faith of Zoroaster should not be corrupted after
Persia had conquered Babylon, and even after its alliance with Media,
where the Magi had great reputation for knowledge. And yet even with the
corrupting influence of the superstitions of Babylon, to say nothing of
Media, the Persian conquerors did not wholly forget the God of their
fathers in their old Bactrian home. And it is probable that one reason
why Cyrus and Darius treated the Jews with so much kindness and
generosity was the sympathy they felt for the monotheism of the Jewish
religion in contrast with the polytheism and idolatry of the conquered
Babylonians. It is not unreasonable to suppose that both the Persians
and Jews worshipped substantially the one God who made the heaven and
the earth, notwithstanding the dualism which entered into the Persian
religion, and the symbolic worship of fire which is the most powerful
agent in Nature; and it is considered by many that from the Persians the
Jews received, during their Captivity, their ideas concerning a personal
Devil, or Power of Evil, of which no hint appears in the Law or the
earlier Prophets. It would certainly seem to be due to that monotheism
which modern scholars see behind the dualism of Persia, as an elemental
principle of the old religion of Iran, that the Persians were the
noblest people of Pagan antiquity, and practised the highest morality
known in the ancient world. Virtue and heroism went hand in hand; and
both virtue and heroism were the result of their religion. But when the
Persians became intoxicated with the wealth and power they acquired on
the fall of Babylon, then their degeneracy was rapid, and their faith
became obscured. Had it been the will of Providence that the Greeks