1 Kings 9:15

Then David lived in the fortress and called it the city of David. And David built all around from the Millo and inward.

Then Solomon formed a marriage alliance with Pharaoh king of Egypt, and took Pharaoh’s daughter and brought her to the city of David until he had completed building his own house and the house of Yahweh and the wall around Jerusalem.

And King Solomon raised up forced laborers from all Israel; and the forced laborers numbered 30,000 men.

As soon as Pharaoh’s daughter came up from the city of David to her house which Solomon had built for her, then he built the Millo.

Now this was the reason why he raised his hand against the king: Solomon built the Millo, and closed up the breach of the city of his father David.

“Your father made our yoke harsh; but you, now, lighten the harsh service of your father and his heavy yoke which he put on us, and we will serve you.”

Now it happened at the end of the twenty years in which Solomon had built the house of Yahweh and his own house

Solomon Builds Cities and Ships