Numbers 21:25-27

²⁵And Israel took all these cities; and Israel dwelt in all the cities of the Emorites, in Cheshbon, and in all the villages thereof.

²⁶For Cheshbon was the city of Sichon the king of the Emorites; and he had fought against the former king of Moab, and taken all his land out of his hand, up to the Arnon.

²⁷Therefore said the poets, Come into Cheshbon, let the city of Sichon be built and established.