The book of Deuteronomy tells us about Israel, a people chosen by God and freed from the yoke of Egypt. This town was very mistreated, but one day the moment came when God freed them from that slavery.
This town was a long time under the yoke of Pharaoh, who had the people of Israel enslaved, doing everything he wanted. But Almighty God came to their aid to fight for each one of them.
When thou goest out to battle against thine enemies, and seest horses, and chariots, and a people more than thou, be not afraid of them: for the Lord thy God is with thee, which brought thee up out of the land of Egypt.
The Lord’s promises to the people of Israel were always present, because everything that God promised them was fulfilled. The Lord helps them in battles, chapter 20 of this book tells us of a sure way of God’s counsel for His people: That if chariots and horses came, do not be afraid, because He will give them the victory and He was reminding them that the He took them out of the bondage of Egypt, it was God who will deliver them from the hands of their enemies.