1 Kings 8:9-13

There was nothing in the ark except the two stone tablets that Moses had placed in it at Horeb, where the LORD made a covenant with the Israelites after they came out of Egypt. When the priests withdrew from the Holy Place, the cloud filled the temple of the LORD. And the priests could not perform their service because of the cloud, for the glory of the LORD filled his temple. Then Solomon said, “The LORD has said that he would dwell in a dark cloud; I have indeed built a magnificent temple for you, a place for you to dwell forever.”