Deuteronomy 4 (KJV With Strong's)

As the name signifies "the house of Peor," it is probable that there was a temple to Peor, situated in this place, full in view of the people, while Moses was pressing upon them the worship of Jehovah alone; and perhaps the very temple where so many had sinned to their own destruction.Moses.

Deut. 1:4• ⁴After he had slain Sihon the king of the Amorites, which dwelt in Heshbon, and Og the king of Bashan, which dwelt at Astaroth in Edrei: (Deut. 1:4)

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Deut. 2:30‑36• ³⁰But Sihon king of Heshbon would not let us pass by him: for the Lord thy God hardened his spirit, and made his heart obstinate, that he might deliver him into thy hand, as appeareth this day.
³¹And the Lord said unto me, Behold, I have begun to give Sihon and his land before thee: begin to possess, that thou mayest inherit his land.
³²Then Sihon came out against us, he and all his people, to fight at Jahaz.
³³And the Lord our God delivered him before us; and we smote him, and his sons, and all his people.
³⁴And we took all his cities at that time, and utterly destroyed the men, and the women, and the little ones, of every city, we left none to remain:
³⁵Only the cattle we took for a prey unto ourselves, and the spoil of the cities which we took.
³⁶From Aroer, which is by the brink of the river of Arnon, and from the city that is by the river, even unto Gilead, there was not one city too strong for us: the Lord our God delivered all unto us: (Deut. 2:30‑36)

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Deut. 3:8• ⁸And we took at that time out of the hand of the two kings of the Amorites the land that was on this side Jordan, from the river of Arnon unto mount Hermon; (Deut. 3:8)

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Num. 21:21‑32• ²¹And Israel sent messengers unto Sihon king of the Amorites, saying,
²²Let 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.
²³And 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.
²⁴And 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.
²⁵And Israel took all these cities: and Israel dwelt in all the cities of the Amorites, in Heshbon, and in all the villages thereof.
²⁶For 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.
²⁷Wherefore they that speak in proverbs say, Come into Heshbon, let the city of Sihon be built and prepared:
²⁸For there is a fire gone out of Heshbon, a flame from the city of Sihon: it hath consumed Ar of Moab, and the lords of the high places of Arnon.
²⁹Woe to thee, Moab! thou art undone, O people of Chemosh: he hath given his sons that escaped, and his daughters, into captivity unto Sihon king of the Amorites.
³⁰We have shot at them; Heshbon is perished even unto Dibon, and we have laid them waste even unto Nophah, which reacheth unto Medeba.
³¹Thus Israel dwelt in the land of the Amorites.
³²And Moses sent to spy out Jaazer, and they took the villages thereof, and drove out the Amorites that were there. (Num. 21:21‑32)

J. N. Darby Translation

on this side the Jordan, in the valley opposite to Beth-Peor, in the land of Sihon the king of the Amorites, who dwelt in Heshbon, whom Moses and the children of Israel smote when they came out of Egypt;