Sentence:  Thrones, Dominations, Princedoms, <WSD>Virtues</WSD>, Powers; / For in possession such, not only of right, / I call ye, and declare ye now .... 
Meaning of the word marked with <WSD> tags:  A creature embodying divine power, specifically one of the orders of heavenly beings, traditionally ranked above angels and below archangels. (from 14th c.)