Deuteronomy 2:2 And the Lord spake unto me, saying, 3 Ye have compassed this mountain long enough: turn you northward. 4 Ye are to pass through the coast of your brethren the children of Esau, which dwell in Seir; and they shall be afraid of you: take ye good heed unto yourselves therefore: 5 Meddle not with them; for I will not give you of their land, no, not so much as a foot breadth; because I have given mount Seir unto Esau for a possession.
[Patriarchs & Prophets pp 433] After passing to the south of Edom, the Israelites turned northward, and again set their faces toward the Promised Land. Their route now lay over a vast, elevated plain, swept by cool, fresh breezes from the hills. It was a welcome change from the parched valley through which they had been traveling, and they pressed forward, buoyant and hopeful. Having crossed the brook Zered, they passed to the east of the land of Moab; for the command had been given, “Distress not the Moabites, neither contend with them in battle: for I will not give thee of their land for a possession; because I have given Ar unto the children of Lot.”
And the same direction was repeated concerning the Ammonites, who were also descendants of Lot. Still pushing northward, the hosts of Israel soon reached the country of the Amorites. This strong and warlike people originally occupied the southern part of the land of Canaan; but, increasing in numbers, they crossed the Jordan, made war upon the Moabites, and gained possession of a portion of their territory. Here they had settled, holding undisputed sway over all the land from the Arnon as far north as the Jabbok. The route to the Jordan which the Israelites desired to pursue lay directly through this territory.
And Moses sent a friendly message to Sihon, the Amorite king, at his capital: “Let me pass through thy land: I will go along by the highway, I will neither turn unto the right hand nor to the left. Thou shalt sell me meat for money, that I may eat; and give me water for money, that I may drink: only I will pass through on my feet.” The answer was a decided refusal, and all the hosts of the Amorites were summoned to oppose the progress of the invaders. This formidable army struck terror to the Israelites, who were poorly prepared for an encounter with well-armed and well-disciplined forces.
Deuteronomy 2:30 But 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.
May God add His blessing to the study of His word. "Good night' and God bless!