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

[301] NOW when their father Hyrcanus was dead, the eldest son Aristobulus, intending to change the government into a kingdom, for so he resolved to do, first of all put a diadem on his head, four hundred eighty and one years and three months after the people had been delivered from the Babylonish slavery, and were returned to their own country again. This Aristobulus loved his next brother Antigonus, and treated him as his equal; but the others he held in bonds. He also cast his mother into prison, because she disputed the government with him; for Hyrcanus had left her to be mistress of all. He also proceeded to that degree of barbarity, as to kill her in prison with hunger; nay, he was alienated from his brother Antigonus by calumnies, and added him to the rest whom he slew; yet he seemed to have an affection for him, and made him above the rest a partner with him in the kingdom. Those calumnies he at first did not give credit to, partly because he loved him, and so did not give heed to what was said against him, and partly because he thought the reproaches were derived from the envy of the relaters. But when Antigonus was once returned from the army, and that feast was then at hand when they make tabernacles to [the honor of God,] it happened that Arlstobulus was fallen sick, and that Antigonus went up most splendidly adorned, and with his soldiers about him in their armor, to the temple to celebrate the feast, and to put up many prayers for the recovery of his brother, when some wicked persons, who had a great mind to raise a difference between the brethren, made use of this opportunity of the pompous appearance of Antigonus, and of the great actions which he had done, and went to the king, and spitefully aggravated the pompous show of his at the feast, and pretended that all these circumstances were not like those of a private person; that these actions were indications of an affectation of royal authority; and that his coming with a strong body of men must be with an intention to kill him; and that his way of reasoning was this: That it was a silly thing in him, while it was in his power to reign himself, to look upon it as a great favor that he was honored with a lower dignity by his brother.