XXVIII. (141) And when he had been taught the patterns of the sacred tabernacle, and had in turn himself taught those who were gifted with acute comprehension, and well-qualified by nature for the comprehension and execution of those works, which it was indispensably necessary should be made; then, as was natural, when the temple had been built and finished, it was fitting also, that most suitable persons should be appointed as priests, and should be instructed in what manner it was proper for them to offer up their sacrifices, and perform their sacred ministrations. (142) Accordingly, Moses selected his brother, choosing him out of all men, because of his superior virtue, to be high priest, and his sons he appointed priests, not giving precedence to his own family, but to the piety and holiness which he perceived to exist in those men; and what is the clearest proof of this is, that he did not think either of his sons worthy of this honour (and he had two); while he must inevitably have appointed both of them, if he had attached any importance to love for his family; (143) and he appointed them with the unanimous consent of the whole nation, as the sacred scriptures have recorded, which was a most novel mode of proceeding, and one especially worthy of being mentioned; and, in the first place, he washed them all over with the most pure and vivifying water of the fountain; and then he gave them their sacred vestments, giving to his brother the robe which reached down to his feet, and the mantle which covered the shoulders, as a sort of breast-plate, being an embroidered robe, adorned with all kinds of figures, and a representation of the universe. And to all his nephews he gave linen tunics, and girdles, and trowsers; (144) the girdles, in order that the wearers might be unimpeded and ready for all their sacred ministrations, were fastened up tight round the loose waists of the tunics; and the breeches, that nothing which ought to be hidden might be visible, especially when they were going up to the altar, or coming down from the high place, and doing everything with earnestness and celerity. (145) For if their equipment had not been so accurately attended to for the sake of guarding against the uncertain future, and for the sake of providing for an energetic promptness in the sacred ministrations, the men would have appeared naked, not being able to preserve the becoming order necessary to holy men dedicated to the service of God.