"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." NIV translation
Leaders lead by example and we see that as Joshua "got up early the next morning". We must remember that the soldiers and priests did not know how many days they were going to be doing this but they went ahead for six days.
"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 army, 'Shout! For the Lord has given you the city! The city and all that is in it are to be devoted to the Lord. Only Rahab the prostitute and all who are with her in her house shall be spared, because she hid the spies we sent.'" NIV translation
On the final day, they circled the city seven times. Joshua informed the soldiers that there would not be any plunder for them as everything was going to be set aside for God. All of the people and things in Jericho that could be destroyed were to be destroyed. Anything that could not be destroyed was going to be set aside for the Lord. He also remembered Rahab and their agreement to spare her and her household. True leaders will have integrity and will walk the talk.
"'But keep away from the devoted things, so that you will not bring about your own destruction by taking any of them. Otherwise you will make the camp of Israel liable to destruction and bring trouble on it. All the silver and gold and the articles of bronze and iron are sacred to the Lord and must go into his treasury.'" NIV translation
Here, we see the principle of the tithe at work. The tithe was an act of faith in trusting that the remaining part of something would be sufficient for the needs of the giver. This was the first city of the land of Canaan to fall to Israel and the tithe was always the first portion.