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

[340] So when Alexander had thus settled matters at Jerusalem, he led his army into the neighboring cities; and when all the inhabitants to whom he came received him with great kindness, the Samaritans, who had then Shechem for their metropolis, (a city situate at Mount Gerizzim, and inhabited by apostates of the Jewish nation,) seeing that Alexander had so greatly honored the Jews, determined to profess themselves Jews; for such is the disposition of the Samaritans, as we have already elsewhere declared, that when the Jews are in adversity, they deny that they are of kin to them, and then they confess the truth; but when they perceive that some good fortune hath befallen them, they immediately pretend to have communion with them, saying that they belong to them, and derive their genealogy from the posterity of Joseph, Ephraim, and Manasseh. Accordingly, they made their address to the king with splendor, and showed great alacrity in meeting him at a little distance from Jerusalem. And when Alexander had commended them, the Shechemites approached to him, taking with them the troops that Sanballat had sent him, and they desired that he would come to their city, and do honor to their temple also; to whom he promised, that when he returned he would come to them. And when they petitioned that he would remit the tribute of the seventh year to them, because they did but sow thereon, he asked who they were that made such a petition; and when they said that they were Hebrews, but had the name of Sidonians, living at Shechem, he asked them again whether they were Jews; and when they said they were not Jews, "It was to the Jews," said he, "that I granted that privilege; however, when I return, and am thoroughly informed by you of this matter, I will do what I shall think proper." And in this manner he took leave of the Shechenlites; but ordered that the troops of Sanballat should follow him into Egypt, because there he designed to give them lands, which he did a little after in Thebais, when he ordered them to guard that country.