Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[204] Now when Moses had bestowed such honorary presents on the workmen, as it was fit they should receive, who had wrought so well, he offered sacrifices in the open court of the tabernacle, as God commanded him; a bull, a ram, and a kid of the goats, for a sin-offering. Now I shall speak of what we do in our sacred offices in my discourse about sacrifices; and therein shall inform men in what cases Moses bid us offer a whole burnt-offering, and in what cases the law permits us to partake of them as of food. And when Moses had sprinkled Aaron's vestments, himself, and his sons, with the blood of the beasts that were slain, and had purified them with spring waters and ointment, they became God's priests. After this manner did he consecrate them and their garments for seven days together. The same he did to the tabernacle, and the vessels thereto belonging, both with oil first incensed, as I said, and with the blood of bulls and of rams, slain day by day one, according to its kind. But on the eighth day he appointed a feast for the people, and commanded them to offer sacrifice according to their ability. Accordingly they contended one with another, and were ambitious to exceed each other in the sacrifices which they brought, and so fulfilled Moses's injunctions. But as the sacrifices lay upon the altar, a sudden fire was kindled from among them of its own accord, and appeared to the sight like fire from a flash of lightning, and consumed whatsoever was upon the altar.