1 Kings 5:14

14 He sent them off to Lebanon in shifts of ten thousand a month, so that they spent one month in Lebanon and two months at home. Adoniram was in charge of the forced labor.

Read 1 Kings 5:14 Using Other Translations

And he sent them to Lebanon, ten thousand a month by courses: a month they were in Lebanon, and two months at home: and Adoniram was over the levy.
And he sent them to Lebanon, 10,000 a month in shifts. They would be a month in Lebanon and two months at home. Adoniram was in charge of the draft.
He sent them to Lebanon in shifts, 10,000 every month, so that each man would be one month in Lebanon and two months at home. Adoniram was in charge of this labor force.