1 Kings 5:9-14
5:9 My servants will bring the timber down from Lebanon to the sea. I will send it by sea in raft-like bundles to the place you designate.
There I will separate the logs
and you can carry them away. In exchange you will supply the food I need for my royal court.”
5:10 So Hiram supplied the cedars and evergreens Solomon needed,
5:11 and Solomon supplied Hiram annually with 20,000 cors of wheat as provision for his royal court, as well as 20,000 baths of pure olive oil.
5:12 So the Lord gave Solomon wisdom, as he had promised him. And Hiram and Solomon were at peace and made a treaty.
5:13 King Solomon conscripted work crews from throughout Israel, 30,000 men in all.
5:14 He sent them to Lebanon in shifts of 10,000 men per month. They worked in Lebanon for one month, and then spent two months at home. Adoniram was supervisor of the work crews.