QUOTATION: Nine Orders of Angels Like Nine Orders of Men

With these nine orders of the angels, correspond on the other hand that multitude of holy men, which no one can number, as we learn from the Apocalypse. This multitude contains also nine "orders ;" for some are patriarchs, some prophets, some apostles, some martyrs and confessors; whilst others are pastors, doctors, priests, Levites, monks, and hermits, holy women, virgins, widows, or married people.

--St. Robert Bellarmine, The Eternal Happiness of the Saints