7 Solomon had twelve regional managers distributed throughout Israel. They were responsible for supplying provisions for the king and his administration. Each was in charge of bringing supplies for one month of the year.

Matthew Henry's Commentary on 1 Kings 4:7

Commentary on 1 Kings 4:1-19

(Read 1 Kings 4:1-19)

In the choice of the great officers of Solomon's court, no doubt, his wisdom appeared. Several are the same that were in his father's time. A plan was settled by which no part of the country was exhausted to supply his court, though each sent its portion.