Hebrews 9:5-7

Amplified Bible

⁵ and above the ark were the [golden] cherubim of glory overshadowing ^[a]the mercy seat; but we cannot now go into detail about these things.

⁶ Now when these things have been prepared in this way, the priests continually enter the outer [or first section of the] tabernacle [that is, the Holy Place] performing [their ritual acts of] the divine worship, ⁷ but into the second [inner tabernacle, the Holy of Holies], only the high priest enters [and then only] once a year, and never without [bringing a sacrifice of] blood, which he offers [as a substitutionary atonement] for himself and for the sins of the people committed in ignorance.^(A)