I don't fear when the Load is with me; repentance

Deuteronomy 2:16-37
The Load did not encroach on any of the land of the Ammonites, neither the land along the course of the Jabbok. Those land the Load has given to the Ammonites, it is a possession to the descendant of Lot.
The Load said to Moses "Set out now and cross the Arnon Gorge. See, I have given into your hand Sihon the Amorite, king of Heshbon, and his country. This very day I will begin to put the terror and fear of you on all the nations under heaven."
Israelite battled with Sihon from Jahaz, struck them down, together with his sons and his army. At that time they took all his towns and completely destroyed them- men, women and children.
Why?
Before Israelite entered the promised land, the Load let Israelite know the Load is with them, so they can struck down their enemy. For Israelite have not any flight experience until now.
The Load also want let all the nations under heaven fear Israel, the Load is their God.
How?
Fighting victory is the Load, when the Load is with us I don't afraid or fear the enemy or problem. Do I obey the command of the Load is the most important matter. Then God is with us.
Repentance:
I have to confess that I am a hard heart person. I did not have mercy to a poor girl when she showed a board to express she need money and was standing beside me when I was waiting for signal this morning. Just as I left there I felt guilt about myself. May be she really needs the money for her family. I can do it but I didn't, to be a christian I felt so shame to my behavior.   May the Load forgive me. I will do it next time.