King James Bible Dictionary

Striking down. The whole country on the east of Jordan, from the Arnon to the Jabbok, was possessed by the Amorites, whose king, Sihon, refused to permit the Israelites to pass through his territory, and put his army in array against them. The Israelites went forth against him to battle, and gained a complete victory. The Amorites were defeated; Sihon, his sons, and all his people were smitten with the sword, his walled towns were captured, and the entire country of the Amorites was taken possession of by the Israelites (Numbers 21:21-30; Deuteronomy 2:24-37).

The country from the Jabbok to Hermon was at this time ruled by Og, the last of the Rephaim. He also tried to prevent the progress of the Israelites, but was utterly routed, and all his cities and territory fell into the hands of the Israelites (comp. Numbers 21:33-35; Deuteronomy 3:1-14; Psalms 135:10-12; 136:17-22).

These two victories gave the Israelites possession of the country on the east of Jordan, from the Arnon to the foot of Hermon. The kingdom of Sihon embraced about 1,500 square miles, while that of Og was more than 3,000 square miles.

rooting out; conclusion

King of the Amorites.

His seat of government at Heshbon
Numbers 21:26

The proverbial chant celebrating the victory of Sihon over the Moabites
Numbers 21:26-30

Conquest of his kingdom by the Israelites
Numbers 21:21-25; Deuteronomy 2:24-37; Deuteronomy 3:2; Deuteronomy 3:6; Deuteronomy 3:8

(warrior) king of the Amorites when Isr'l arrived on the borders of the promised land. (Numbers 21:21) (B.C. 1451.) Shortly before the time of Isr'l's arrival he had dispossessed the Moabites of a splendid territory, driving them south of the natural bulwark of the Amen. Ibid. (Numbers 21:26-29) When the Isr'lite host appeared, he did not hesitate or temporize like Balak, but at once gathered his people together and attacked them. But the battle was his last. He and all his host were destroyed, and their district from Amen to Jabbok became at once the possession of the conqueror.