Jamieson, Fausset and Brown on 1 Kings 6:15-21

15-21. he built the walls of the house within--The walls were wainscotted with cedar-wood; the floor, paved with cypress planks; the interior was divided (by a partition consisting of folding doors, which were opened and shut with golden chains) into two apartments--the back or inner room, that is, the most holy place, was twenty cubits long and broad; the front, or outer room, that is, the holy place, was forty cubits. The cedar-wood was beautifully embellished with figures in relievo, representing clusters of foliage, open flowers, cherubims, and palm trees. The whole interior was overlaid with gold, so that neither wood nor stone was seen; nothing met the eye but pure gold, either plain or richly chased.