The victory we see in Exodus 17:8-16 isn't one that is achieved through great strategy or overwhelming numbers and human feats of strength. This victory is a direct result of God's will and strength. This passage reminds us that there are battles that need fought, we need to be united in this fight, and we need the LORD to be our strength in the fight.
Exodus 17:8-16
8Then Amalek came and fought with Israel at Rephidim. 9So Moses said to Joshua, “Choose for us men, and go out and fight with Amalek. Tomorrow I will stand on the top of the hill with the staff of God in my hand.” 10So Joshua did as Moses told him, and fought with Amalek, while Moses, Aaron, and Hur went up to the top of the hill. 11Whenever Moses held up his hand, Israel prevailed, and whenever he lowered his hand, Amalek prevailed. 12But Moses’ hands grew weary, so they took a stone and put it under him, and he sat on it, while Aaron and Hur held up his hands, one on one side, and the other on the other side. So his hands were steady until the going down of the sun. 13And Joshua overwhelmed Amalek and his people with the sword.
14Then the Lord said to Moses, “Write this as a memorial in a book and recite it in the ears of Joshua, that I will utterly blot out the memory of Amalek from under heaven.” 15And Moses built an altar and called the name of it, The Lord Is My Banner, 16saying, “A hand upon the throne of the Lord! The Lord will have war with Amalek from generation to generation.”