Josh 6:1-2

Now Jericho was tightly shut up because of the Israelites. No one went out and no one came in. Then the LORD said to Joshua, "See, I have delivered Jericho into your hands, along with its king and its fighting men.  

Josh 6:3 NIV

March around the city once with all the armed men. Do this for six days.

Josh 6:4 NIV

Have seven priests carry trumpets of rams' horns in front of the ark. On the seventh day, march around the city seven times, with the priests blowing the trumpets.

Josh 6:5 NIV

When you hear them sound a long blast on the trumpets, have all the people give a loud shout; then the wall of the city will collapse and the people will go up, every man straight in."

Josh 6:10 NIV

But Joshua had commanded the people, "Do not give a war cry, do not raise your voices, do not say a word until the day I tell you to shout. Then shout!"

Josh 6:12-14 NIV

Joshua got up early the next morning and the priests took up the ark of the LORD. The seven priests carrying the seven trumpets went forward, marching before the ark of the LORD and blowing the trumpets. The armed men went ahead of them and the rear guard followed the ark of the LORD, while the trumpets kept sounding. So on the second day they marched around the city once and returned to the camp. They did this for six days.

Josh 6:15-16 NIV

On the seventh day, they got up at daybreak and marched around the city seven times in the same manner, except that on that day they circled the city seven times. The seventh time around, when the priests sounded the trumpet blast, Joshua commanded the people, "Shout! For the LORD has given you the city!

Josh 6:20 NIV

When the trumpets sounded, the people shouted, and at the sound of the trumpet, when the people gave a loud shout, the wall collapsed; so every man charged straight in, and they took the city.