Hebrews 9:3-5

3Beyond the second curtain was a dwelling called the Holy of Holies.

4It held a golden altar of incense and the ark of the covenant, completely covered with gold. In the ark was a golden jar holding the manna , Aaron’s rod that budded, and the tablets of the covenant—

5and above it, cherubim of glory overshadowing the mercy seat. But it is not now possible to speak in detail about these things.