2 Chronicles 33:6

33:6 He passed his sons through the fire in the Valley of Ben-Hinnom and practiced divination, omen reading, and sorcery. He set up a ritual pit to conjure up underworld spirits and appointed magicians to supervise it. He did a great amount of evil in the sight of the Lord and angered him.

2 Chronicles 33:14

33:14 After this Manasseh built up the outer wall of the City of David on the west side of the Gihon in the valley to the entrance of the Fish Gate and all around the terrace; he made it much higher. He placed army officers in all the fortified cities in Judah.