The writer of this epistle is again comparing the sacrifice made by Christ with that of the high priests. They made offerings over and over. He made one offering--himself.
And that one offering is enough to cover for sins of all people.
Christ will return, we are told, but not to deal with sin. That's been dealt with. He will appear to save those who are eagerly waiting for him.
Is that good news, or not?
What does "eagerly waiting" mean"?
If you do read ahead, you'll find some rather scary judgment talk (see 10:26-27)