Ezra 7:24
Also we certify you, that touching any of the priests and Levites, singers, porters, Nethinims, or ministers of this house of God, it shall not be lawful to impose toll, tribute, or custom, upon them.
Also we certify you, that touching any of the priests and Levites, singers, porters, Nethinims, or ministers of this house of God,.... The king had a right and perfect knowledge of the distinct offices and services of those persons, see Ezra 7:7,
it shall not be lawful to impose toll, tribute, or custom, upon them; that they might be the less encumbered with the affairs of life, and be more at leisure to attend divine service, and do it the more readily and freely; it was usual with the Heathens to except ecclesiastics from taxes, tributes, and imposts; so the priests in Egypt {w}, and the Druids here in Britain {x}.
{w} Diodor. Sicul. l. 1. p. 66.
{x} Caesar. Comment. de Bello Gall. l. 6. c. 13.