Who is “The (Arch)angel of the Lord”?

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According to Holy Scripture, there are not several archangels — all of whom are creatures. For there is only one Archangel or Leader of the created unfallen angels – Michael, the uncreated God the Son Himself.

Extra-Scriptural views expand this greatly, and revere up to twelve created archangels. Post-Tanachic Judaism notes Gabriel, Michael, Raphael, and Uriel.   Gnosticism has Iao, symbolized by a snake — and ruling over one of the seven then-known planets.   Mediaeval Judaism and the unreformed Church expanded these to include also Raguel, Remuel and Sariel. Whereas Islam has Israafiyl, ‘Izraaiyl, Jibriyl, Mikaal — and the four throne-guardians of Allah.