1 Kings 9:23-28

They were also the chief officials in charge of Solomon’s projects—550 officials supervising those who did the work. After Pharaoh’s daughter had come up from the City of David to the palace Solomon had built for her, he constructed the terraces. Three times a year Solomon sacrificed burnt offerings and fellowship offerings on the altar he had built for the LORD, burning incense before the LORD along with them, and so fulfilled the temple obligations. King Solomon also built ships at Ezion Geber, which is near Elath in Edom, on the shore of the Red Sea. And Hiram sent his men—sailors who knew the sea—to serve in the fleet with Solomon’s men. They sailed to Ophir and brought back 420 talents of gold, which they delivered to King Solomon.