“Jedaiah,” “Jehoiarib,” and “Jachin,” are not here names of individuals but of priestly families. From 1 Chronicles 24:7-17, it appears that Jehoiarib was the original head of the first “course,” Jedaiah of the second shift, and Jachin of the twenty-first shift.
Related Commentaries of 1 Chronicles 9:10
1 Chronicles 9:10
10 And of the priests; Jedaiah, and Jehoiarib, and Jachin,