פירוש על דברי הימים א 3:22

and the sons of Shemaiah: Hattush, and Jigal, and Bariah, and Neariah, and Shaphat six They are, in reality, only five, but there is a reason, as is written below (25:3) concerning the watches of the Levites: “Of Jeduthun, the sons of Jeduthun: Gedaliah, and Zeri, and Isaiah, Hashabiah, and Mattithiah six,” but they are only five.