Hebrews 9:7, 12, 24-25

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.

Christ entered the Most Holy Place only once—and for all time. He did not take with him the blood of goats and calves. His sacrifice was his own blood, and by it he set us free from sin forever.

Christ did not go into the Most Holy Place made by humans, which is only a copy of the real one. He went into heaven itself and is there now before God to help us. The high priest enters the Most Holy Place once every year with blood that is not his own. But Christ did not offer himself many times.