The following is a map between Isaiah chapter 6 and Joshua chapters 5-24.
13 Isaiah 6:1-2
1In the year that King Uzziah died I saw Master sitting on a throne, high and lifted up, and his train filled his house.
2And above him stood the seraphim; each one had 6 wings; with 2 he covered his face, with 2 he covered his feet, and with 2 he flew.
6 Joshua 5:13-25
13And it came to pass, when Joshua was in the plain of Jericho, he lifted up his eyes and looked, and saw a man who stood opposite him with his sword drawn in his hand; and Joshua went to him, and said to him, Are you of us or of our enemies?
14And he said to him, I am the commander of the host of Yahvah, and now I have come here. And Joshua fell on his face to the land, and worshiped, and said, What has my Master to say to his servant?
15And the commander of Yahvah's host said to Joshua, Take your shoes off your feet; for the place where you stand is holy. And Joshua did so.
13 Isaiah 6:3-4
3And one called to another, and said, Holy, holy, holy, is Yahvah of hosts; the whole land is full of his glory.
4And the posts of the door shook at the voice of him who called, and the house was filled with smoke.
6 Joshua 6:20
20So the people shouted and the priests blew the trumpets; and it came to pass, when the people heard the sound of the trumpets, they shouted with a great shout, and the wall fell down flat, so that the people went up into the city, every man straight before him, and they took the city.
13 Isaiah 6:5
5Then I said, Woe is me, I am dismayed; for I am a man of unclean lips, and I live among a people of unclean lips; for my eyes have seen the King, Yahvah of hosts.
6 Joshua 6:22-23
22But Joshua said to the 2 men who had spied out the country, Go into the prostitute's house, and bring out from there the woman and all that she has, as you swore to her.
23And the spies went in and brought out Rahab and her father and her mother and her brothers and all that she had; and they brought out all her relatives, and placed them outside the camp of Israel.
13 Isaiah 6:6-7
6Then one of the seraphim flew to me, having a live coal in his hand, which he had taken with the tongs from off the altar;
7and he touched my mouth and said to me, Look, this has touched your lips; your iniquity is taken away, and your sins are forgiven.
6 Joshua 6:24-25
24And they burned the city with fire, and all that was in it; only the silver and the gold and the vessels of brass and of iron, they brought into the treasury of the house of Yahvah.
25But Rahab the prostitute and her father's house and all that she had, Joshua saved alive; and she lived among the children of Israel, even to this day; because she hid the spies whom Joshua sent to spy out Jericho.
13 Isaiah 6:8
8And I heard the voice of Master saying, Whom will I send, and who will go for us? Then I said, Here I am; send me.
6 Joshua 23:1-3
1And it came to pass after a long time, when Yahvah had given rest to Israel from all their enemies around, that Joshua was old, and well advanced in years,
2That Joshua summoned all Israel, their elders, their heads, their judges, and their scribes, and said to them, I am old and well advanced in years;
3and you have seen all that Yahvah your God has done to all these nations, which he destroyed from before you; for it is Yahvah your God who has fought for you.
13 Isaiah 6:9-10
9And he said to me, Go, and tell this people, You can hear, but do not understand; and you can see, but do not perceive.
10For the heart of this people is darkened and their ears are heavy and their eyes closed, so that they may not see with their eyes and hear with their ears and understand with their heart and be converted and be forgiven.
6 Joshua 23:12-13
12For if you ever turn back and join the remnant of these nations that remain among you and make marriages with them and mix with them and they with you;
13then know for sure that Yahvah your God will not destroy these nations from before you any longer; but they will be snares and traps to you, and spears in your sides and fishhooks in your eyes, until you perish from off this good land which Yahvah your God has given you.
13 Isaiah 6:11-12
11Then I said, How long, Master? And he said, Until the cities lie waste without inhabitants and the houses without men and the land be utterly desolate
12and Yahvah will have cast off men far away and there will be a great forsaking in the middle of the land.
6 Joshua 24:16-18
16And the people answered and said, God forbid that we should forsake Yahvah to serve other gods;
17for it is Yahvah our God who has brought us up out of the land of Egypt, from the house of servitude, and who performed those great signs in our sight, and preserved us in all the way in which we went, and among all the peoples through whom we passed;
18and Yahvah destroyed from before us all these peoples, the Amorites in whose land we live; Yahvah destroyed them from before us; therefore we will serve Yahvah; for he is the only God, and he is our God.
13 Isaiah 6:13
13And those who remain in it will be 1/10th, and again they will be burned and will be made like the terebinth or like an oak which is fallen from its stump. The holy seed is its source.
6 Joshua 24:25-26
25So Joshua made a contract with the people that day, and taught them the commandments and the ordinances in Shechem.
26And Joshua wrote these words in the book of the law of God, and took a great stone, and set it up there under an oak that was by the sanctuary of Yahvah.
Total matches with Joshua are 8.