Hebrews 9:6-8

When everything in the Tent was made ready in this way, the priests went into the first room every day to worship. But only the high priest could go into the second room, and he did that only once a year. He could never enter the inner room without taking blood with him, which he offered to God for himself and for sins the people did without knowing they did them. The Holy Spirit uses this to show that the way into the Most Holy Place was not open while the system of the old Holy Tent was still being used.