Joshua 2:11 And as soon as we had heard these things, our hearts did melt, neither did there remain any more courage in any man, because of you: for the Lord your God, he is God in heaven above, and in earth beneath.
Rahab believes God. She knows that He is God and the only god in heaven or earth.
As Israel had moved all of her people had heard what God was doing. She said that their people were terrified. She wanted to be saved. She wanted to join the people of God and not die with those of the strange gods.
God was at work. He was showing His power. He was spreading His Word. Now Rahab turns and believes. He, God, wanted the entire world to know Him. Many, even most, would reject Him and believe in their false gods but the door was open and those who would believe could.
God was working in the midst of His people and any who would believe. He is doing the same today, but just like in the days of Rahab it mean turning from your family, your people, your life to Him and His life.
Will you do just that?