In time the Hebrew language began to be influenced by others, although, as a people, they rank with the Greeks and Spaniards as being very little moulded by any outside influence on their literature. From the time of Abraham to the age of Moses the old stock was changed by the intermarriage of some of their race with the Egyptians and Arabians. During this period their literature was influenced by Zoroaster, and by the Platonist and Pythagorean schools. This is especially noticeable in the work of Philo of Alexandria, who was born a few years B.C. Josephus, who first saw the light in A.D. 37; and Numenius, who lived in the second century, were Jews, who as such remained, while adopting Greek philosophy. The learned writings of the Rabbis became known as Rabbinical literature. It is written in a language that has its roots in the Hebrew and Chaldaic; though it has also borrowed largely from the Arabian, Greek and Latin. In the sixteenth century Christian scholars began to make an extensive study of Hebrew and Rabbinical literature, and they were not slow to discover the value of these Oriental works. These writings, however, are subject to change, and it is in the Bible alone that we find the fundamental teaching of Hebrew literature. Differing entirely from the Mythological and Oriental Nations, it taught, as its cardinal principle, the unity of God. Its historical worth has been recognized by the greatest scholars in all ages, and it has influenced not only the ancient world, but also the literature and poetry of the Middle Ages and of modern times. It forms a contrast to the philosophy of the Greeks, and to that of Europeans of a later age. When the latter have tried to explain the great mystery of God and man, they have invariably failed. In the beautiful writings of the Greeks, wherein we find the height of artistic expression and polish, there is a subsequent gradual decline; but such is not the case in the Old Testament. In every age fresh beauty and hidden treasure is found in its pages. Another phase of the Bible which has had a far reaching and lasting effect upon all language and literature, is its prevailing spirit of types and symbols. This is conspicuous both in the poetical books and in those that are didactic or historical. It has had the same influence on the thoughts and imagination of all Christian people and upon the poetry and imitative arts of the Middle Ages (and nearly the same upon later and more cultivated times) that Homer had upon the Ancients. For in it we find the standard of all our Christian images and figures, and it gives us a model of imitation that is far more beautiful in itself, and far more world-wide in its application than anything we can borrow from the Greeks. We see this in Dante and Tasso, and in other Christian poets. To the Hebrew, as the original custodians of the Old Testament, we are indebted for keeping the faith pure when all other nations either forgot or abandoned it, or else