Community Rule (1QS 9) and 11QMelchizedek
The Qumran community waited for a prophet and for messiahs of Aaron and Israel, and 11QMelchizedek presents a heavenly priest who atones and judges in the last days.
Second Temple Jews did not treat priesthood as a metaphor for warm feelings. They argued about legitimate priests, a true temple, and who held the right to teach and atone. The Restoration stands in that biblical fight: authority is conferred, keys are real, and a heavenly priesthood after the order of Melchizedek is not a Mormon invention.

