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

[191] Yet did not Jonathan suspect any thing at all by this his management, but believed that Trypho gave him this advice out of kindness, and with a sincere design. Accordingly, he dismissed his army, and retained no more than three thousand of them with him, and left two thousand in Galilee; and he himself, with one thousand, came with Trypho to Ptolemais. But when the people of Ptolemais had shut their gates, as it had been commanded by Trypho to do, he took Jonathan alive, and slew all that were with him. He also sent soldiers against those two thousand that were left in Galilee, in order to destroy them; but those men having heard the report of what had happened to Jonathan, they prevented the execution; and before those that were sent by Trypho came, they covered themselves with their armor, and went away out of the country. Now when those that were sent against them saw that they were ready to fight for their lives, they gave them no disturbance, but returned back to Trypho.