'Slabs' in the Bible
You shall make [the altar] hollow with slabs or planks; as shown you on the mountain, so shall it be made.
And slabs or hooks a handbreadth long were fastened within [the room] round about. Upon the tables was to be placed the flesh of the offering.
It had the golden altar of incense and the ark (chest) of the covenant, covered over with wrought gold. This [ark] contained a golden jar which held the manna and the rod of Aaron that sprouted and the [two stone] slabs of the covenant [bearing the Ten Commandments].