Deuteronomy 3:1-3 New International Version (NIV)
Defeat of Og King of Bashan
3 Next we turned and went up along the road toward Bashan, and Og king of Bashan with his whole army marched out to meet us in battle at Edrei. 2 The Lord said to me, “Do not be afraid of him, for I have delivered him into your hands, along with his whole army and his land. Do to him what you did to Sihon king of the Amorites, who reigned in Heshbon.”
3 So the Lord our God also gave into our hands Og king of Bashan and all his army. We struck them down, leaving no survivors.
The Israelites faced a huge problem coming up against the well trained army of Og. The Israelites did not stand a chance. The odds were stacked against them. They were the under dog. They were weaker. But, they won because God fought for them. God helps his people regardless of the odds, obstacles, or problems. Remember, no matter how futile it may seem and no matter how big the obstacles may seem, God is sovereign. He keeps his promises.