The Perizzites occupied the southern area in the land of Canaan in the portion given to Judah, Simeon and the sons of Joseph.
Deuteronomy 7:1-2 - When the LORD your God brings you into the land where you go to possess it, and casts out many nations before you, the Hittite, the Girgashite, the Amorite, the Canaanite, the Perizzite, the Hivite, and the Jebusite, seven nations greater and mightier than you; and when the LORD your God delivers them up before you, and you strike them; then you shall utterly destroy them. You shall make no covenant with them, nor show mercy to them;
The Perizzites were one of the seven nations that God commanded to utterly destroy. They were indeed driven out by the conquering Israelites, yet Israel failed to destroy them completely.
Judges 3:5-7 - "The children of Israel lived among the Canaanites, the Hittites, the Amorites, the Perizzites, the Hivites, and the Jebusites. They took their daughters to be their wives, and gave their own daughters to their sons and served their gods. The children of Israel did that which was evil in The LORD's sight, and forgot the LORD their God, and served the Baals and the Asheroth.
The religion of the ancient Canaanites was idolatrous. They made their sons and their daughters to pass through the fire to Moloch, and they worshipped Baal and Ashtaroth, which included temple prostitution.
Scriptures
Deuteronomy 7:1 - When the LORD thy God shall bring thee into the land whither thou goest to possess it, and hath cast out many nations before thee, the Hittites, and the Girgashites, and the Amorites, and the Canaanites, and the Perizzites, and the Hivites, and the Jebusites, seven nations greater and mightier than thou;
Exodus 3:8 - And I am come down to deliver them out of the hand of the Egyptians, and to bring them up out of that land unto a good land and a large, unto a land flowing with milk and honey; unto the place of the Canaanites, and the Hittites, and the Amorites, and the Perizzites, and the Hivites, and the Jebusites.
Nehemiah 9:8 - And foundest his heart faithful before thee, and madest a covenant with him to give the land of the Canaanites, the Hittites, the Amorites, and the Perizzites, and the Jebusites, and the Girgashites, to give [it, I say], to his seed, and hast performed thy words; for thou [art] righteous:
Ezra 9:1 - Now when these things were done, the princes came to me, saying, The people of Israel, and the priests, and the Levites, have not separated themselves from the people of the lands, [doing] according to their abominations, [even] of the Canaanites, the Hittites, the Perizzites, the Jebusites, the Ammonites, the Moabites, the Egyptians, and the Amorites.
Joshua 17:15 - And Joshua answered them, If thou [be] a great people, [then] get thee up to the wood [country], and cut down for thyself there in the land of the Perizzites and of the giants, if mount Ephraim be too narrow for thee.
Exodus 3:17 - And I have said, I will bring you up out of the affliction of Egypt unto the land of the Canaanites, and the Hittites, and the Amorites, and the Perizzites, and the Hivites, and the Jebusites, unto a land flowing with milk and honey.
Joshua 24:11 - And ye went over Jordan, and came unto Jericho: and the men of Jericho fought against you, the Amorites, and the Perizzites, and the Canaanites, and the Hittites, and the Girgashites, the Hivites, and the Jebusites; and I delivered them into your hand.
Exodus 23:23 - For mine Angel shall go before thee, and bring thee in unto the Amorites, and the Hittites, and the Perizzites, and the Canaanites, the Hivites, and the Jebusites: and I will cut them off.
Genesis 34:30 - And Jacob said to Simeon and Levi, Ye have troubled me to make me to stink among the inhabitants of the land, among the Canaanites and the Perizzites: and I [being] few in number, they shall gather themselves together against me, and slay me; and I shall be destroyed, I and my house.
Deuteronomy 20:17 - But thou shalt utterly destroy them; [namely], the Hittites, and the Amorites, the Canaanites, and thePerizzites, the Hivites, and the Jebusites; as the LORD thy God hath commanded thee:
Joshua 12:8 - In the mountains, and in the valleys, and in the plains, and in the springs, and in the wilderness, and in the south country; the Hittites, the Amorites, and the Canaanites, the Perizzites, the Hivites, and the Jebusites:
Joshua 3:10 - And Joshua said, Hereby ye shall know that the living God [is] among you, and [that] he will without fail drive out from before you the Canaanites, and the Hittites, and the Hivites, and the Perizzites, and the Girgashites, and the Amorites, and the Jebusites.
Judges 1:4 - And Judah went up; and the LORD delivered the Canaanites and the Perizzites into their hand: and they slew of them in Bezek ten thousand men.
Judges 3:5 - And the children of Israel dwelt among the Canaanites, Hittites, and Amorites, and Perizzites, and Hivites, and Jebusites:
1 Kings 9:20 - [And] all the people [that were] left of the Amorites, Hittites, Perizzites, Hivites, and Jebusites, which [were] not of the children of Israel,
2 Chronicles 8:7 - [As for] all the people [that were] left of the Hittites, and the Amorites, and the Perizzites, and the Hivites, and the Jebusites, which [were] not of Israel,
Judges 1:5 - And they found Adonibezek in Bezek: and they fought against him, and they slew the Canaanites and thePerizzites.
Genesis 15:20 - And the Hittites, and the Perizzites, and the Rephaims.