Meanwhile many of the notable citizens, at the instance of Ananus, son of Jonathan, sent an invitation to Cestius, promising to open the gates to him. These overtures, however, partly in scorn and resentment, partly because he did not wholly credit them, he hesitated to accept, until the insurgents, discovering the treason, dragged down Ananus and his confederates from the wall and drove them, with showers of stones, into their houses. Then, taking up their stations in detachments, they hurled their missiles from the towers upon the enemy who were assailing the wall. So for five days the Romans pressed their attack on all sides without success, till on the sixth Cestius led a large force of picked men with the archers to an assault on the north side of the Temple. The Jews from the portico warded it off, and time after time repulsed those who had reached the wall, but at length, overpowered by the hail of missiles, gave way. The front rank of the Romans then planted their shields against the wall, those behind them planted other shields upon the first, and the rest did in like manner, forming a screen which they call “the tortoise,”[262] from which the missiles, as they fell, glanced off harmlessly, while the soldiers with immunity undermined the wall and prepared to set fire to the gate of the Temple. A terrible panic now seized the insurgents, many of whom were already slinking out of the city in the belief that it was on the verge of capture. The populace thereupon took heart again, and the more the miscreants gave ground, the nearer did the others approach the gates, ready to open them and welcome Cestius as a benefactor. Had he but persisted for a while with the siege, he would have forthwith taken the city. But I suppose that on account of those wicked men God, already regarding even the sanctuary with aversion, ordained that that day should not see the end of the war. Unexpected Withdrawal of Cestius, Pursued by the Jews At any rate, Cestius, perceiving neither the desperate condition of the besieged nor the temper of the populace, suddenly recalled his troops, and, without having sustained any reverse, abandoned his hopes[263] and, contrary to all calculation, retired from the city. On this unexpected retreat, the brigands, plucking up courage, sallied out upon his rear and killed a considerable number both of horse and foot.