Archangel appears exactly twice in the New Testament: 1 Thessalonians 4:16, the voice of the archangel, unnamed, and Jude 9, Michael the archangel, disputing over Moses' body. Gabriel, despite universal tradition, is never called archangel in the Bible. Daniel calls Michael one of the chief princes, implying peers the text never names. The famous seven come from elsewhere: Tobit 12:15's seven who stand before the glory, and Enoch 20's seven named archangels.
By the eighth century, angel veneration had swollen into what the Church saw as angelolatry, with rosters of archangels multiplying. At the Council of Rome in 745, Pope Zachary struck the apocryphal names, Uriel, Raguel, and the rest, from licit veneration, leaving only Michael, Gabriel, and Raphael, the three with canonical footing. A synod at Aix-la-Chapelle repeated the purge in 789. The Orthodox churches never fully signed on, and Uriel stayed venerated in the East.
The claim: archangel is less a rank than a containment device, a small licensed list that lets a church acknowledge popular angel devotion while keeping the roster countable, nameable, and controllable. Verdict: the 745 council is literally documented evidence of roster management for doctrinal safety. Whether heaven keeps an org chart is above our clearance; whether Rome does is on the record.
If Michael is the only archangel in scripture, where did the other six come from?