Bible Verses About Priest: Polluted by marrying idolatrous wives

Now when these things were done, the princes drew near unto me, saying, The people of Israel, and the priests and the Levites, have not separated themselves from the peoples 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.

For they have taken of their daughters for themselves and for their sons, so that the holy seed have mingled themselves with the peoples of the lands: yea, the hand of the princes and rulers hath been chief in this trespass.

Then arose Ezra, and made the chiefs of the priests, the Levites, and all Israel, to swear that they would do according to this word. So they sware.

And among the sons of the priests there were found that had married foreign women: namely, of the sons of Jeshua, the son of Jozadak, and his brethren, Maaseiah, and Eliezer, and Jarib, and Gedaliah.

And they gave their hand that they would put away their wives; and being guilty, they offered a ram of the flock for their guilt.

And the rest of the people, the priests, the Levites, the porters, the singers, the Nethinim, and all they that had separated themselves from the peoples of the lands unto the law of God, their wives, their sons, and their daughters, every one that had knowledge, and understanding;