Parallel
Hebrews 5:3
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καὶ διὰ ταύτην ὀφείλει, καθὼς περὶ τοῦ λαοῦ, οὕτω καὶ περὶ ἑαυτοῦ προσφέρειν ὑπὲρ ἁμαρτιῶν.
That is why he is obligated to offer sacrifices for his own sins, as well as for the sins of the people.