1 Chronicles 24:7

Now the first lot came forth to Jehoiarib, the second to Jedaiah,

The verse stands at the beginning of the dividing of the priests into twenty-four courses, and a full and accurate record of that division was made. It was David's careful application of the principle of apportioning special duties to the men best fitted for them. The work was perfected when Solomon was placed on the throne to organize every branch of priestly, Levitical, civil, and military service. Each priestly course was thoroughly organized under its chief, and each was to come to Jerusalem twice a year to attend for one week at a time to the ministry of the sanctuary.