2 Chronicles 3:8

3:8 He made the most holy place; its length was 30 feet, corresponding to the width of the temple, and its width 30 feet. He plated it with 600 talents of fine gold.

2 Chronicles 8:11

8:11 Solomon moved Pharaoh’s daughter up from the City of David to the palace he had built for her, for he said, “My wife must not live in the palace of King David of Israel, for the places where the ark of the Lord has entered are holy.”

2 Chronicles 23:6

23:6 No one must enter the Lord’s temple except the priests and Levites who are on duty. They may enter because they are ceremonially pure. All the others should carry out their assigned service to the Lord.