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

[147] For these reasons he went away from Rome, and sailed to Judea, but in evil circumstances, being dejected with the loss of that money which he once had, and because he had not wherewithal to pay his creditors, who were many in number, and such as gave him no room for escaping them. Whereupon he knew not what to do; so, for shame of his present condition, he retired to a certain tower, at Malatha, in Idumea, and had thoughts of killing himself; but his wife Cypros perceived his intentions, and tried all sorts of methods to divert him from his taking such a course; so she sent a letter to his sister Herodias, who was now the wife of Herod the tetrarch, and let her know Agrippa's present design, and what necessity it was which drove him thereto, and desired her, as a kinswoman of his, to give him her help, and to engage her husband to do the same, since she saw how she alleviated these her husband's troubles all she could, although she had not the like wealth to do it withal. So they sent for him, and allotted him Tiberias for his habitation, and appointed him some income of money for his maintenance, and made him a magistrate of that city, by way of honor to him. Yet did not Herod long continue in that resolution of supporting him, though even that support was not sufficient for him; for as once they were at a feast at Tyre, and in their cups, and reproaches were cast upon one another, Agrippa thought that was not to be borne, while Herod hit him in the teeth with his poverty, and with his owing his necessary food to him. So he went to Flaccus, one that had been consul, and had been a very great friend to him at Rome formerly, and was now president of Syria.