I. (1) The first volume of this treatise relates to the subject of the birth and bringing up of Moses, and also of his education and of his government of his people, which he governed not merely irreproachably, but in so exceedingly praiseworthy a manner; and also of all the affairs, which took place in Egypt, and in the travels and journeyings of the nation, and of the events which happened with respect to their crossing the Red Sea and in the desert, which surpass all power of description; and, moreover, of all the labours which he conducted to a successful issue, and of the inheritances which he distributed in portions to his soldiers. But the book which we are now about to compose relates to the affairs which follow those others in due order, and bear a certain correspondence and connection with them. (2) For some persons say, and not without some reason and propriety, that this is the only way by which cities can be expected to advance in improvement, if either the kings cultivate philosophy, or if philosophers exercise the kingly power. But Moses will be seen not only to have displayed all these powers--I mean the genius of the philosopher and of the king--in an extraordinary degree at the same time, but three other powers likewise, one of which is conversant about legislation, the second about the way of discharging the duties of high priest, and the last about the prophetic office; (3) and it is on these subjects that I have now been constrained to choose to enlarge; for I conceive that all these things have fitly been united in him, inasmuch as in accordance with the providential will of God he was both a king and a lawgiver, and a high priest and a prophet, and because in each office he displayed the most eminent wisdom and virtue. We must now show how it is that every thing is fitly united in him. (4) It becomes a king to command what ought to be done, and to forbid what ought not to be done; but the commanding what ought to be done, and the prohibition of what ought not to be done, belongs especially to the law, so that the king is at once a living law, and the law is a just king. (5) But a king and a lawgiver ought to pay attention not only to human things, but also to divine ones, for the affairs of neither kings nor subjects go on well except by the intervention of divine providence; on which account it was necessary that such a man as Moses should enjoy the first priesthood, in order that he might with perfectly conducted sacrifices, and with a perfect knowledge of the proper way to serve God, entreat for a deliverance from evil and for a participation in good, both for himself and for the people whom he was governing, from the merciful God who listens favourably to prayers. (6) But since there is an infinite variety of both human and divine circumstances which are unknown both to king, and lawgiver, and chief priest, for a man is no less a created and mortal being from having all these offices, or because he is clothed with such a vast and boundless inheritance of honour and happiness, he was also of necessity invested with the gift of prophecy, in order that he might through the providence of God learn all those things which he was unable to comprehend by his own reason; for what the mind is unable to attain to, that prophecy masters. (7) Therefore the connection of these four powers is beautiful and harmonious, for being all connected together and united one to another, they unite in concert, receiving and imparting a reciprocity of benefits from and to one another, imitating the virgin graces with whom it is an immutable law of their nature that they cannot be disunited, with respect to whom one might fairly say, what is habitually said of the virtues, that he who has one has them all.