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

[12] Now, for the Pharisees, they live meanly, and despise delicacies in diet; and they follow the conduct of reason; and what that prescribes to them as good for them they do; and they think they ought earnestly to strive to observe reason's dictates for practice. They also pay a respect to such as are in years; nor are they so bold as to contradict them in any thing which they have introduced; and when they determine that all things are done by fate, they do not take away the freedom from men of acting as they think fit; since their notion is, that it hath pleased God to make a temperament, whereby what he wills is done, but so that the will of man can act virtuously or viciously. They also believe that souls have an immortal rigor in them, and that under the earth there will be rewards or punishments, according as they have lived virtuously or viciously in this life; and the latter are to be detained in an everlasting prison, but that the former shall have power to revive and live again; on account of which doctrines they are able greatly to persuade the body of the people; and whatsoever they do about Divine worship, prayers, and sacrifices, they perform them according to their direction; insomuch that the cities give great attestations to them on account of their entire virtuous conduct, both in the actions of their lives and their discourses also.