Numbers 21:20

16From there they traveled to Beer; that is the well of which the LORD said to Moses, “Gather the people together, and I will give them water.”

17Then Israel sang this song: “Spring up, well! Sing to it,

18the well, which the princes dug, which the nobles of the people dug, with the scepter, and with their poles.” From the wilderness they traveled to Mattanah;

19and from Mattanah to Nahaliel; and from Nahaliel to Bamoth;

20and from Bamoth to the valley that is in the field of Moab, to the top of Pisgah, which looks down on the desert.

21Israel sent messengers to Sihon king of the Amorites, saying,

22“Let me pass through your land. We will not turn away into field or vineyard. We will not drink of the water of the wells. We will go by the king’s highway, until we have passed your border.”

23Sihon would not allow Israel to pass through his border, but Sihon gathered all his people together, and went out against Israel into the wilderness, and came to Jahaz. He fought against Israel.

24Israel struck him with the edge of the sword, and possessed his land from the Arnon to the Jabbok, even to the children of Ammon; for the border of the children of Ammon was fortified.