The Nine Orders
The nine ranks of the angelic hierarchy — Seraphim to Angels.
The celestial hierarchy in three triads — Seraphim to Angels.
The Church received the threefold ordering of the celestial ranks above all through St Dionysius the Areopagite’s On the Celestial Hierarchy. Nine orders are arranged in three triads, each receiving the divine light and passing it to the rank below — from the Seraphim who stand nearest the throne to the Angels who minister among men.
Nearest the throne
The highest hierarchy, given wholly to the contemplation and praise of God, and receiving the divine light most immediately.
The heavenly governance
The middle hierarchy, through which the order of the cosmos is upheld and the divine will is administered to the ranks below.
Ministers to creation
The lowest hierarchy, nearest the created world, who bear God’s messages, watch over nations, and guard His people.