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

[300] THE disorders about Herod's family and children about this time grew much worse; for it now appeared certain, nor was it unforeseen before-hand, that fortune threatened the greatest and most insupportable misfortunes possible to his kingdom. Its progress and augmentation at this time arose on the occasion following: One Eurycles, a Lacedemonian, (a person of note there, but a man of a perverse mind, and so cunning in his ways of voluptuousness and flattery, as to indulge both, and yet seem to indulge neither of them,) came in his travels to Herod, and made him presents, but so that he received more presents from him. He also took such proper seasons for insinuating himself into his friendship, that he became one of the most intimate of the king's friends. He had his lodging in Antipater's house; but he had not only access, but free conversation, with Alexander, as pretending to him that he was in great favor with Archclaus, the king of Cappadocia; whence he pretended much respect to Glaphyra, and in an occult manner cultivated a friendship with them all; but always attending to what was said and done, that he might be furnished with calumnies to please them all. In short, he behaved himself so to every body in his conversation, as to appear to be his particular friend, and he made others believe that his being any where was for that person's advantage. So he won upon Alexander, who was but young; and persuaded him that he might open his grievances to him with assurance and with nobody else. So he declared his grief to him, how his father was alienated from him. He related to him also the affairs of his mother, and of Antipater; that he had driven them from their proper dignity, and had the power over every thing himself; that no part of this was tolerable, since his father was already come to hate them; and he added, that he would neither admit them to his table, nor to his conversation. Such were the complaints, as was but natural, of Alexander about the things that troubled him; and these discourses Eurycles carried to Antipater, and told him he did not inform him of this on his own account, but that being overcome by his kindness, the great importance of the thing obliged him to do it; and he warned him to have a care of Alexander, for that what he said was spoken with vehemency, and that, in consequence of what he said, he would certainly kill him with his own hand. Whereupon Antipater, thinking him to be his friend by this advice, gave him presents upon all occasions, and at length persuaded him to inform Herod of what he had heard. So when he related to the king Alexander's ill temper, as discovered by the words he had heard him speak, he was easily believed by him; and he thereby brought the king to that pass, turning him about by his words, and irritating him, till he increased his hatred to him and made him implacable, which he showed at that very time, for he immediately gave Eurycles a present of fifty talents; who, when he had gotten them, went to Archclaus, king of Cappadocia, and commended Alexander before him, and told him that he had been many ways of advantage to him, in making a reconciliation between him and his father. So he got money from him also, and went away, before his pernicious practices were found out; but when Eurycles was returned to Lacedemon, he did not leave off doing mischief; and so, for his many acts of injustice, he was banished from his own country.