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

[11] But Vespasian removed from Emmaus, where he had last pitched his camp before the city Tiberias, (now Emmaus, if it be interpreted, may be rendered "a warm bath," for therein is a spring of warm water, useful for healing,) and came to Gamala; yet was its situation such that he was not able to encompass it all round with soldiers to watch it; but where the places were practicable, he set men to watch it, and seized upon the mountain which was over it. And as the legions, according to their usual custom, were fortifying their camp upon that mountain, he began to cast up banks at the bottom, at the part towards the east, where the highest tower of the whole city was, and where the fifteenth legion pitched their camp; while the fifth legion did duty over against the midst of the city, and whilst the tenth legion filled up the ditches and the valleys. Now at this time it was that as king Agrippa was come nigh the walls, and was endeavoring to speak to those that were on the walls about a surrender, he was hit with a stone on his right elbow by one of the slingers; he was then immediately surrounded with his own men. But the Romans were excited to set about the siege, by their indignation on the king's account, and by their fear on their own account, as concluding that those men would omit no kinds of barbarity against foreigners and enemies, who where so enraged against one of their own nation, and one that advised them to nothing but what was for their own advantage.