Philo: On the Posterity of Cain and His Exile

XXVIII. (96) But a thing which is sacred is proved to be so by three witnesses, the middle number, education, and perfect number. On which account it is said, "Of everything which cometh in the number under the rod, the tenth is sacred," for that which is not accounted worthy of being comprehended under number is profane, not sacred; but that which is according to number is approved, as having been already tested. Accordingly the law says, that the corn which was collected in Egypt by Joseph could not be Counted,"

and adds, "for it was without number," since the things which nourish the body and the Egyptian passions, are utterly unworthy to be included in any calculation. (97) But the rod is the symbol of education, for without being looked at sternly, and chastised for some causes, it is impossible for any one to be admonished and corrected to any good purpose; but the number ten is a confirmation of that perfection which takes place in accordance with improvement, with which he must begin who having brought forth an offspring educated it, and brought the wished-for fruit to maturity.