Hebrews 9:3-8

and behind the second veil, the part of the tabernacle which is called the Holiest of All, which had the golden censer and the ark of the covenant overlaid on all sides with gold, in which were the golden pot that had the manna, Aaron’s rod that budded, and the tablets of the covenant; and above it were the cherubim of glory overshadowing the mercy seat. Of these things we cannot now speak in detail. Now when these things had been thus prepared, the priests always went into the first part of the tabernacle, performing the services. But into the second part the high priest went alone once a year, not without blood, which he offered for himself and for the people’s sins committed in ignorance; the Holy Spirit indicating this, that the way into the Holiest of All was not yet made manifest while the first tabernacle was still standing.