Joshua chapter 5 verses 13 through 15

The commander of the Lord's army

When Joshua was by Jericho he lifted up his eyes and looked and behold a man was standing before him with his drawn sword in his hand

and Joshua went to him and said to him,

Are you for us or for our adversaries? And he said, no, but I am the commander of the army of the

Lord. Now I have come. And Joshua fell on his face to the earth and worshipped and said to him,

What does my lord say to his servant? And the commander

of the Lord's army said to Joshua, take off your sandals from your feet for the place where you

are standing is holy, and Joshua did so. Joshua chapter 6. The Fall of Jericho

Now Jericho was shut up inside and outside because of the people of Israel.

None went out and none came in.

And the Lord said to Joshua,

See, I have given Jericho into your hand,

with its king and mighty men of the lore you shall march around the city

all the men of war going around the city once thus shall you do for six days

seven priests shall bear seven trumpets of ram's horns before the ark on the seventh day

you shall march around the city seven times and and the priest shall blow the trumpets.

And when they make a long blast with the ram's horn, when you hear the sound of the trumpet,

then all the people shall shout with a great shout, and the wall of the city will fall down flat.

And the people shall go up everyone straight before him.

So Joshua, the son of nun, called the priest and said to them,

take up the ark of the covenant, and let seven priests bear seven trumpets of ram's horns before the ark of the Lord.

...