1 Kings 9:21-28

21 their descendants who were left after them in the land, whom the people of Israel were unable to destroy utterly--these Solomon made a forced levy of slaves, and so they are to this day.
22 But of the people of Israel Solomon made no slaves; they were the soldiers, they were his officials, his commanders, his captains, his chariot commanders and his horsemen.
23 These were the chief officers who were over Solomon's work: five hundred and fifty, who had charge of the people who carried on the work.
24 But Pharaoh's daughter went up from the city of David to her own house which Solomon had built for her; then he built the Millo.
25 Three times a year Solomon used to offer up burnt offerings and peace offerings upon the altar which he built to the LORD, burning incense before the LORD. So he finished the house.
26 King Solomon built a fleet of ships at E'zion-ge'ber, which is near Eloth on the shore of the Red Sea, in the land of Edom.
27 And Hiram sent with the fleet his servants, seamen who were familiar with the sea, together with the servants of Solomon;
28 and they went to Ophir, and brought from there gold, to the amount of four hundred and twenty talents; and they brought it to King Solomon.