1 Kings 8:9-11

Complete Jewish Bible

⁹ There was nothing in the ark except the two tablets of stone which Moshe put there at Horev, when Adonai made the covenant with the people of Isra’el at the time of their leaving the land of Egypt.

¹⁰ When the cohanim came out of the Holy Place, the cloud filled the house of Adonai, ¹¹ so that, because of the cloud, the cohanim could not stand up to perform their service; for the glory of Adonai filled the house of Adonai.