Jewish Wars VI Chapter 9,3

3. Now the number (1) of those that were carried captive during this whole war was collected to be ninety-seven thousand; as was the number of those that perished during the whole siege eleven hundred thousand, the greater part of whom were indeed of the same nation [with the citizens of Jerusalem], but not belonging to the city itself; for they were come up from all the country to the feast of unleavened bread, and were on a sudden shut up by an army, which, at the very first, occasioned so great a straitness among them, that there came a pestilential destruction upon them, and soon afterward such a famine, as destroyed them more suddenly. And that this city could contain so many people in it, is manifest by that number of them which was taken under Cestius, who being desirous of informing Nero of the power of the city, who otherwise was disposed to contemn that nation, entreated the high priests, if the thing were possible, to take the number of their whole multitude. So these high priests, upon the coming of that feast which is called the Passover, when they slay their sacrifices, from the ninth hour till the eleventh, but so that a company not less than ten (2) belong to every sacrifice, (for it is not lawful for them to feast singly by themselves,) and many of us are twenty in a company, found the number of sacrifices was two hundred and fifty-six thousand five hundred; which, upon the allowance of no more than ten that feast together, amounts to two millions seven hundred thousand and two hundred persons that were pure and holy; for as to those that have the leprosy, or the gonorrhea, or women that have their monthly courses, or such as are otherwise polluted, it is not lawful for them to be partakers of this sacrifice; nor indeed for any foreigners neither, who come hither to worship.

(1) The whole multitude of the Jews that were destroyed during the entire seven years before this time, in all the countries of and bordering on Judea, is summed up by Archbishop Usher, from Lipsius, out of Josephus, at the year of Christ 70, and amounts to 1,337,490. Nor could there have been that number of Jews in Jerusalem to be destroyed in this siege, as will be presently set down by Josephus, but that both Jews and proselytes of justice were just then come up out of the other countries of Galilee, Samaria, Judea, and Perea and other remoter regions, to the passover, in vast numbers, and therein cooped up, as in a prison, by the Roman army, as Josephus himself well observes in this and the next section, and as is exactly related elsewhere, B. V. ch. 3. sect. 1 and ch. 13. sect. 7.

(2) This number of a company for one paschal lamb, between ten and twenty, agrees exactly with the number thirteen, at our Savior's last passover. As to the whole number of the Jews that used to come up to the passover, and eat of it at Jerusalem, see the note on B. II. ch. 14. sect. 3. This number ought to be here indeed just ten times the number of the lambs, or just 2,565,(D0, by Josephus's own reasoning; whereas it is, in his present copies, no less than 2,700,(D0, which last number is, however, nearest the other number in the place now cited, which is 3,000,000. But what is here chiefly remarkable is this, that no foreign nation ever came thus to destroy the Jews at any of their solemn festivals, from the days of Moses till this time, but came now upon their apostasy from God, and from obedience to him. Nor is it possible, in the nature of things, that in any other nation such vast numbers should be gotten together, and perish in the siege of any one city whatsoever, as now happened in Jerusalem.