'Priests and Levites' in the Bible

And David said unto all the assembly of Israel, If it seem good unto you, and if it be of Jehovah our God, let us send abroad every where unto our brethren that are left in all the land of Israel, with whom the priests and Levites are in their cities that have suburbs, that they may gather themselves unto us;

And they departed not from the commandment of the king unto the priests and Levites concerning any matter, or concerning the treasures.

But many of the priests and Levites and heads of fathers houses , the old men that had seen the first house, when the foundation of this house was laid before their eyes, wept with a loud voice; and many shouted aloud for joy:

Also we certify you, that touching any of the priests and Levites, the singers, porters, Nethinim, or servants of this house of God, it shall not be lawful to impose tribute, custom, or toll, upon them.

And on that day were men appointed over the chambers for the treasures, for the heave-offerings, for the first-fruits, and for the tithes, to gather into them, according to the fields of the cities, the portions appointed by the law for the priests and Levites: for Judah rejoiced for the priests and for the Levites that waited.

And this is the witness of John, when the Jews sent unto him from Jerusalem priests and Levites to ask him, Who art thou?