2 Chronicles 27:3
He built the high gate of the house of the LORD, and on the wall of Ophel he built much.
Nave's Topical Index—AKJV

2 Chronicles 33:14
Now after this he built a wall without the city of David, on the west side of Gihon, in the valley, even to the entering in at the fish gate, and compassed about Ophel, and raised it up a very great height, and put captains of war in all the fenced cities of Judah.
Nave's Topical Index—AKJV

Nehemiah 3:26,27
Moreover the Nethinims dwelled in Ophel, to the place over against the water gate toward the east, and the tower that lies out.
Nave's Topical Index—AKJV