1. The people mourned for Aaron thirty days, and when this mourning was over, Moses removed the army from that place, and came to the river Arnon, which, issuing out of the mountains of Arabia, and running through all that wilderness, falls into the lake Asphaltitis, and becomes the limit between the land of the Moabites and the land of the Amorites. This land is fruitful, and sufficient to maintain a great number of men, with the good things it produces. Moses therefore sent messengers to Sihon, the king of this country, desiring that he would grant his army a passage, upon what security he should please to require; he promised that he should be no way injured, neither as to that country which Sihon governed, nor as to its inhabitants; and that he would buy his provisions at such a price as should be to their advantage, even though he should desire to sell them their very water. But Sihon refused his offer, and put his army into battle array, and was preparing every thing in order to hinder their passing over Arnon.
2. When Moses saw that the Amorite king was disposed to enter upon hostilities with them, he thought he ought not to bear that insult; and, determining to wean the Hebrews from their indolent temper, and prevent the disorders which arose thence, which had been the occasion of their former sedition, [nor indeed were they now thoroughly easy in their minds,] he inquired of God, whether he would give him leave to fight? which when he had done, and God also promised him the victory, he was himself very courageous, and ready to proceed to fighting. Accordingly he encouraged the soldiers; and he desired of them that they would take the pleasure of fighting, now God gave them leave so to do. They then, upon the receipt of this permission, which they so much longed for, put on their whole armor, and set about the work without delay. But the Amorite king was not now like to himself when the Hebrews were ready to attack him; but both he himself was affrighted at the Hebrews, and his army, which before had showed themselves to be of good courage, were then found to be timorous: so they could not sustain the first onset, nor bear up against the Hebrews, but fled away, as thinking this would afford them a more likely way for their escape than fighting, for they depended upon their cities, which were strong, from which yet they reaped no advantage when they were forced to fly to them; for as soon as the Hebrews saw them giving ground, they immediately pursued them close; and when they had broken their ranks, they greatly terrified them, and some of them broke off from the rest, and ran away to the cities. Now the Hebrews pursued them briskly, and obstinately persevered in the labors they had already undergone; and being very skillful in slinging, and very dexterous in throwing of darts, or any thing else of that kind, and also having nothing but light armor, which made them quick in the pursuit, they overtook their enemies; and for those that were most remote, and could not be overtaken, they reached them by their slings and their bows, so that many were slain; and those that escaped the slaughter were sorely wounded, and these were more distressed with thirst than with any of those that fought against them, for it was the summer season; and when the greatest number of them were brought down to the river out of a desire to drink, as also when others fled away by troops, the Hebrews came round them, and shot at them; so that, what with darts and what with arrows, they made a slaughter of them all. Sihon their king was also slain. So the Hebrews spoiled the dead bodies, and took their prey. The land also which they took was full of abundance of fruits, and the army went all over it without fear, and fed their cattle upon it; and they took the enemies prisoners, for they could no way put a stop to them, since all the fighting men were destroyed. Such was the destruction which overtook the Amorites, who were neither sagacious in counsel, nor courageous in action. Hereupon the Hebrews took possession of their land, which is a country situate between three rivers, and naturally resembled an island: the river Arnon being its southern; the river Jabbok determining its northern side, which running into Jordan loses its own name, and takes the other; while Jordan itself runs along by it, on its western coast.
3. When matters were come to this state, Og, the king of Gilead and Gaulanitis, fell upon the Israelites. He brought an army with him, and in haste to the assistance of his friend Sihon: but though he found him already slain, yet did he resolve still to come and fight the Hebrews, supposing he should be too hard for them, and being desirous to try their valor; but failing of his hope, he was both himself slain in the battle, and all his army was destroyed. So Moses passed over the river Jabbok, and overran the kingdom of Og. He overthrew their cities, and slew all their inhabitants, who yet exceeded in riches all the men in that part of the continent, on account of the goodness of the soil, and the great quantity of their wealth. Now Og had very few equals, either in the largeness of his body, or handsomeness of his appearance. He was also a man of great activity in the use of his hands, so that his actions were not unequal to the vast largeness and handsome appearance of his body. And men could easily guess at his strength and magnitude when they took his bed at Rabbath, the royal city of the Ammonites; its structure was of iron, its breadth four cubits, and its length a cubit more than double thereto. However, his fall did not only improve the circumstances of the Hebrews for the present, but by his death he was the occasion of further good success to them; for they presently took those sixty cities, which were encompassed with excellent walls, and had been subject to him, and all got both in general and in particular a great prey.