Joshua 13:10

and all the cities of Sihon king of the Amorites, who reigned in Heshbon, as far as the border of the sons of Ammon;

Numbers 21:24-26

Then Israel struck him with the edge of the sword, and took possession of his land from the Arnon to the Jabbok, as far as the sons of Ammon; for the border of the sons of Ammon was Jazer.

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