Exodus 26:33

33Then the veil shall be inserted through the rings. Beyond the veil, you shall place the ark of the testimony, where both the Sanctuary and the Sanctuary of Sanctuaries shall be divided.
26:33 The sanctuary, etc: That part of the tabernacle, which was without the veil, into which the priests daily entered, is here called the sanctuary, or holy place; that part which was within the veil, into which no one but the high priest ever went, and he but once a year, is called the holy of holies, (literally, the sanctuary of the sanctuaries,) as being the most holy of all holy places.(Challoner)
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