Numbers Chapter 21 Verse 17Then Israel sang this song, Spring up, O well; sing ye unto it:

Therefore the people came to Moses, and said, We have sinned, for we have spoken against the LORD, and against thee; pray unto the LORD, that he take away the serpents from us. And Moses prayed for the people.

And the LORD said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live.

And Moses made a serpent of brass, and put it upon a pole, and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived.

And the children of Israel set forward, and pitched in Oboth.

And they journeyed from Oboth, and pitched at Ijeabarim, in the wilderness which [is] before Moab, toward the sunrising.

From thence they removed, and pitched in the valley of Zared.

From thence they removed, and pitched on the other side of Arnon, which [is] in the wilderness that cometh out of the coasts of the Amorites: for Arnon [is] the border of Moab, between Moab and the Amorites.

Wherefore it is said in the book of the wars of the LORD, What he did in the Red sea, and in the brooks of Arnon,

And at the stream of the brooks that goeth down to the dwelling of Ar, and lieth upon the border of Moab.

And from thence [they went] to Beer: that [is] the well whereof the LORD spake unto Moses, Gather the people together, and I will give them water.

The princes digged the well, the nobles of the people digged it, by [the direction of] the lawgiver, with their staves. And from the wilderness [they went] to Mattanah:

And from Mattanah to Nahaliel: and from Nahaliel to Bamoth:

And from Bamoth [in] the valley, that [is] in the country of Moab, to the top of Pisgah, which looketh toward Jeshimon.

And Israel sent messengers unto Sihon king of the Amorites, saying,

Let me pass through thy land: we will not turn into the fields, or into the vineyards; we will not drink [of] the waters of the well: [but] we will go along by the king's [high] way, until we be past thy borders.

And Sihon would not suffer Israel to pass through his border: but Sihon gathered all his people together, and went out against Israel into the wilderness: and he came to Jahaz, and fought against Israel.

And Israel smote him with the edge of the sword, and possessed his land from Arnon unto Jabbok, even unto the children of Ammon: for the border of the children of Ammon [was] strong.

And Israel took all these cities: and Israel dwelt in all the cities of the Amorites, in Heshbon, and in all the villages thereof.

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, even unto Arnon.

Wherefore they that speak in proverbs say, Come into Heshbon, let the city of Sihon be built and prepared:

The Book of Numbers, Chapter 21, Verse 17