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

[161] And now Agrippa was come to Puteoli, whence he wrote a letter to Tiberius Caesar, who then lived at Capreae, and told him that he was come so far in order to wait on him, and to pay him a visit; and desired that he would give him leave to come over to Caprein: so Tiberius made no difficulty, but wrote to him in an obliging way in other respects; and withal told him he was glad of his safe return, and desired him to come to Capreae; and when he was come, he did not fail to treat him as kindly as he had promised him in his letter to do. But the next day came a letter to Caesar from Herennius Capito, to inform him that Agrippa had borrowed three hundred thousand drachmae, and not pad it at the time appointed; but when it was demanded of him, he ran away like a fugitive, out of the places under his government, and put it out of his power to get the money of him. When Caesar had read this letter, he was much troubled at it, and gave order that Agrippa should be excluded from his presence until he had paid that debt: upon which he was no way daunted at Caesar's anger, but entreated Antonia, the mother of Germanicus, and of Claudius, who was afterward Caesar himself, to lend him those three hundred thousand drachmae, that he might not be deprived of Tiberius's friendship; so, out of regard to the memory of Bernice his mother, (for those two women were very familiar with one another,) and out of regard to his and Claudius's education together, she lent him the money; and, upon the payment of this debt, there was nothing to hinder Tiberius's friendship to him. After this, Tiberius Caesar recommended to him his grandson, and ordered that he should always accompany him when he went abroad. But upon Agrippa's kind reception by Antonia, he betook him to pay his respects to Caius, who was her grandson, and in very high reputation by reason of the good-will they bare his father. Now there was one Thallus, a freed-man of Caesar, of whom he borrowed a million of drachmae, and thence repaid Antonia the debt he owed her; and by sending the overplus in paying his court to Caius, became a person of great authority with him.