Think of what the Israelites are doing from a psychological perspective, considering that the population was already on edge:
Joshua 2:9 (WEB) “She said to the men, ‘I know that Yahweh has given you the land, and that the fear of you has fallen upon us, and that all the inhabitants of the land melt away before you.’ “
Joshua 5:1 (WEB) “When all the kings of the Amorites, who were beyond the Jordan westward, and all the kings of the Canaanites, who were by the sea, heard how Yahweh had dried up the waters of the Jordan from before the children of Israel until we had crossed over, their heart melted, and there was no more spirit in them, because of the children of Israel.”
Some speculate that the act of marching, then blowing the trumpets, and finally shouting caused something seismic to happen, or a resonance disaster. Maybe God instructed them to do that precisely because He knew that would happen. Or maybe it was a complete and total miracle. Either way, God instructed, they obeyed, and God gave them the victory! And the Israelites not only obeyed God to the letter (even with the destruction), but they emulated His faithfulness. Rahab and her family are saved, as promised.
Thought for the day: The ark of the covenant symbolized God’s presence. It was the focal point when the water was stopped in the Jordan, and it was a focal point as they marched around the city. Thankfully we don’t need an ark now. We are the arks!
John 14:16-17 (WEB) “I will pray to the Father, and he will give you another Counselor, that he may be with you forever: the Spirit of truth, whom the world can’t receive, for it doesn’t see him and doesn’t know him. You know him, for he lives with you and will be in you.”