Numbers 21:13-31

From there they set out and camped on the other side of the Arnon, which is in the wilderness that extends from the border of the Amorites, for the Arnon is the border of Moab, between Moab and the Amorites. Therefore it is said in the Book of the Wars of the LORD, “Waheb in Suphah, and the valleys of the Arnon, and the slope of the valleys that extends to the seat of Ar, and leans to the border of Moab.” And from there they continued to Beer; that is the well of which the LORD said to Moses, “Gather the people together, so that I may give them water.” Then Israel sang this song: “Spring up, O well!—Sing to it!— the well that the princes made, that the nobles of the people dug, with the scepter and with their staffs.” And from the wilderness they went on to Mattanah, and from Mattanah to Nahaliel, and from Nahaliel to Bamoth, and from Bamoth to the valley lying in the region of Moab by the top of Pisgah that looks down on the desert. Then Israel sent messengers to Sihon king of the Amorites, saying, “Let me pass through your land. We will not turn aside into field or vineyard. We will not drink the water of a well. We will go by the King’s Highway until we have passed through your territory.” But Sihon would not allow Israel to pass through his territory. He gathered all his people together and went out against Israel to the wilderness and came to Jahaz and fought against Israel. And Israel defeated him with the edge of the sword and took possession of his land from the Arnon to the Jabbok, as far as to the Ammonites, for the border of the Ammonites was strong. And Israel took all these cities, and Israel settled in all the cities of the Amorites, in Heshbon, and in all its villages. For Heshbon was the city of Sihon the king of the Amorites, who had fought against the former king of Moab and taken all his land out of his hand, as far as the Arnon. Therefore the ballad singers say, “Come to Heshbon, let it be built; let the city of Sihon be established. For fire came out from Heshbon, flame from the city of Sihon. It devoured Ar of Moab, and swallowed the heights of the Arnon. Woe to you, O Moab! You are undone, O people of Chemosh! He has made his sons fugitives, and his daughters captives, to an Amorite king, Sihon. So we overthrew them; Heshbon, as far as Dibon, perished; and we laid waste as far as Nophah; fire spread as far as Medeba.” Thus Israel lived in the land of the Amorites.

English Standard Version (ESV)