Hebrews 5:3

and on account of this, he ought, as for the people, so also for himself, to make offering for sins.

Hebrews 7:27

who needs not daily, as those high priests, to offer up sacrifices, first for his own sins, and then for the sins of the people: for this he did once, when he offered up himself.

Hebrews 9:7

But into the second, the high priest alone went, once during the year, not without blood, which he offered for himself, and for the errors of the people:

Treasury of Scripture Knowledge

Summary

And by reason hereof he ought, as for the people, so also for himself, to offer for sins.

Bible References

As

Hebrews 7:27
who needs not daily, as those high priests, to offer up sacrifices, first for his own sins, and then for the sins of the people: for this he did once, when he offered up himself.
Hebrews 9:7
But into the second, the high priest alone went, once during the year, not without blood, which he offered for himself, and for the errors of the people: