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

[354] Now when Herod had already reigned seventeen years, Caesar came into Syria; at which time the greatest part of the inhabitants of Gadara clamored against Herod, as one that was heavy in his injunctions, and tyrannical. These reproaches they mainly ventured upon by the encouragement of Zenodorus, who took his oath that he would never leave Herod till he had procured that they should be severed from Herod's kingdom, and joined to Caesar's province. The Gadarens were induced hereby, and made no small cry against him, and that the more boldly, because those that had been delivered up by Agrippa were not punished by Herod, who let them go, and did them no harm; for indeed he was the principal man in the world who appeared almost inexorable in punishing crimes in his own family, but very generous in remitting the offenses that were committed elsewhere. And while they accused Herod of injuries, and plunderings, and subversions of temples, he stood unconcerned, and was ready to make his defense. However, Caesar gave him his right hand, and remitted nothing of his kindness to him, upon this disturbance by the multitude; and indeed these things were alleged the first day, but the hearing proceeded no further; for as the Gadarens saw the inclination of Caesar and of his assessors, and expected, as they had reason to do, that they should be delivered up to the king, some of them, out of a dread of the torments they might undergo, cut their own throats in the night time, and some of them threw themselves down precipices, and others of them cast themselves into the river, and destroyed themselves of their own accord; which accidents seemed a sufficient condemnation of the rashness and crimes they had been guilty of; whereupon Caesar made no longer delay, but cleared Herod from the crimes he was accused of. Another happy accident there was, which was a further great advantage to Herod at this time; for Zenodorus's belly burst, and a great quantity of blood issued from him in his sickness, and he thereby departed this life at Antioch in Syria; so Caesar bestowed his country, which was no small one, upon Herod; it lay between Trachon and Galilee, and contained Ulatha, and Paneas, and the country round about. He also made him one of the procurators of Syria, and commanded that they should do every thing with his approbation; and, in short, he arrived at that pitch of felicity, that whereas there were but two men that governed the vast Roman empire, first Caesar, and then Agrippa, who was his principal favorite, Caesar preferred no one to Herod besides Agrippa, and Agrippa made no one his greater friend than Herod besides Caesar. And when he had acquired such freedom, he begged of Caesar a tetrarchy ¹ for his brother Pheroras, while he did himself bestow upon him a revenue of a hundred talents out of his own kingdom, that in case he came to any harm himself, his brother might be in safety, and that his sons might not have dominion over him. So when he had conducted Caesar to the sea, and was returned home, he built him a most beautiful temple, of the whitest stone, in Zenodorus's country, near the place called Panlure. This is a very fine cave in a mountain, under which there is a great cavity in the earth, and the cavern is abrupt, and prodigiously deep, and frill of a still water; over it hangs a vast mountain; and under the caverns arise the springs of the river Jordan. Herod adorned this place, which was already a very remarkable one, still further by the erection of this temple, which he dedicated to Caesar.