The writer describes the sinfulness of the Old Testament priests, then he shows that Christ has a better kind of priesthood, not based on Aaron's priesthood but on the priesthood of Melchizedek.
This can be stated in active form. AT: "those ... whom others have deceived" or "those ... who believe what is false" (See: [[:en:ta:vol2:translate:figs_activepassive]])
The high priest's own weakness is spoken of as if it were a another person who rules over him. AT: "is spiritually weak" or "is weak against sin" (See: [[rc://en/ta/man/translate/figs-metaphor]])