Exodus 17:8-16
8 The Amalekites came and attacked the Israelites at Rephidim. 9 Moses said to Joshua, “Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on top of the hill with the staff of God in my hands.”
10 So Joshua fought the Amalekites as Moses had ordered, and Moses, Aaron and Hur went to the top of the hill. 11 As long as Moses held up his hands, the Israelites were winning, but whenever he lowered his hands, the Amalekites were winning. 12 When Moses’ hands grew tired, they took a stone and put it under him and he sat on it. Aaron and Hur held his hands up—one on one side, one on the other—so that his hands remained steady till sunset. 13 So Joshua overcame the Amalekite army with the sword.
14 Then the Lord said to Moses, “Write this on a scroll as something to be remembered and make sure that Joshua hears it, because I will completely blot out the memory of Amalek from under heaven.”
15 Moses built an altar and called it The Lord is my Banner. 16 He said, “For hands were lifted up to the throne of the Lord. Thea Lord will be at war against the Amalekites from generation to generation.”
This is an intriguing war because as any other battles it composes of two groups but there is God in the middle. God using the Israelites to defeat the Amalekites. Why would God use ordinary people to fight for Him?
The situation is that Moses is assigned to go on top of the mountain as Joshua would fight a physical battle between the Israelites and the Amalekites where Joshua doesn't even know what Moses will be doing.
In verse 11 we see how Moses being on top of the mountain plays a major role in this battle. "As long as Moses held up his hands, the Israelites were WINNING, but whenever he lowered his hands, the Amalekites were winning."
The battle was not determined by how strong or fierce Joshua and his people fought, but it was determined by if a man's hands were up or not. Eventually we see that it was not because Joshua and the Israelites fought well that brought them victory but the stead hands of Moses that were raised throughout the fight.
This symbolizes us. Ordinary people. No matter how strong, talented, smart we are without God's provision we can't do anything. As long as Moses held his hands in parallel, as long as we are praying, crying out to God for his help, we will win. But as soon as Moses' hands grew tired and lowered his hands, whenever you feel worn out and give up on prayer, the enemy has the advantage.
This is a big reminder for us that it is not about us, but about God. It's not about our talents, gifts, wealth. It is about Him who can and will do all things for His Kingdom. And in His plans you and I play a very special role. Colossians 4:2 reminds us by saying, "Devote yourselves to prayer, being watchful and thankful."