Aaronites are the descendants of Aaron and therefore priests. The name is used only twice in the Bible. In 1 Chronicles 12:27, they make up 3700 fighting men who, under the leadership of Jehoiada the father of Benaiah, joined David at Hebron. Later, in 1 Chronicles 27:17, their chief is Zadok who had been “a young man mighty of valour” (1 Chronicles 12:28). They clearly made up an important fighting force in the time of David.