'Set apart' in the Bible

And afterward they offered the continual burnt offering, both of the new moons and of all the set feasts of Jehovah that were set apart, and of everyone who willingly offered a freewill offering to Jehovah.

also 220 of the temple servants, whom David and the leaders had set apart [with their descendants] for the service of the Levites. They were all designated by name.

I set apart twelve of the official priests: Sherebiah, Hashabiah, and ten of their brothers with them.

And the children of the captivity did so. And Ezra the priest, with certain heads of the fathers' houses, according to their fathers' houses, and each of them by name, were set apart, and sat down in the first day of the tenth month to examine the matter.