Jamieson, Fausset & Brown, on Luke 1:5

“There was in the days of Herod, the king of Judea, a certain priest named Zachary, of the course of Abia; and his wife was of the daughters of Aaron, and her name Elizabeth.”

“ANNOUNCEMENT OF THE FORERUNNER. (Luke 1:5-25) Herod--(See on Mat 2:1). course of Abia--or Abijah; the eighth of the twenty-four orders of courses into which David divided the priests (see Ch1 24:1, Ch1 24:4, Ch1 24:10). Of these courses only four returned after the captivity (Ezr 2:34-39), which were again subdivided into twenty-four--retaining the ancient name and order of each. They took the whole temple service for a week each. his wife was of the daughters of Aaron--The priests might marry into any tribe, but "it was most commendable of all to marry one of the priests' line" [LIGHTFOOT].”

Imported from an open dataset — not yet checked against the printed edition.