Hebrews 5:3
and so is obliged to offer sin-offerings, not only for the people but for himself as well.
Hebrews 5:1
For every high priest who is taken from men is appointed to officiate on behalf of men in matters relating to God, that is, to offer gifts and sin-offerings.
Hebrews 9:7
but into the second or inner part nobody but the high priest may go, and he only once a year, and never without blood which he offers for himself and for the sins committed in ignorance by the people.
Hebrews 7:27-28
who does not need, as did the Levitical priests, to offer sacrifices, first for his own sins and then for those of the people; this latter is just what He did once for all when He offered up Himself.