When these things have been prepared in this way, priests enter the first tent all the time as they perform their service.
But only the high priest enters the second tent once a year. He never does this without blood, which he offers for himself and for the sins the people committed in ignorance.
With this, the Holy Spirit is showing that the way into the holy place hadn't been revealed yet while the first tent was standing.
This is a symbol for the present time. It shows that the gifts and sacrifices that are being offered can't perfect the conscience of the one who is serving.