Joshua 6:16, 20

After their seventh time around, when the priests were about to blow the shofars, Joshua commanded the people: “Shout a shout of joy! YAHWEH has given you the city!

The people were ready to shout with a great shout when they heard the shofars. As soon as they heard the blast of the shofars, they raised a massive shout of jubilee like a thunderclap, and all at once the thick walls of Jericho collapsed! Everyone rushed straight ahead and captured the city.