'Priests and Levites' in the Bible

But many of the priests and Levites and heads of ancestral houses, the old men who had seen the first house, when the foundation of this house was laid before their eyes, wept with a loud voice. Many also shouted aloud for joy,

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