"In this country live a considerable part of the very populous nation of the Jews, including as it is said, certain persons, more than four thousand in number, called Essenes. Their name which is, I think, a variation, though the form of the Greek is inexact, of ὁσιότης (holiness), is given them, because they have shown themselves especially devout in the service of God, not by offering sacrifices of animals, but by resolving to sanctify their minds."