Sentence:  About his Chariot numberleſs were pour'd / <WSD>Cherub</WSD> and Seraph, Potentates and Thrones, / And Vertues, winged Spirits, and Chariots wing'd, [...] 
Meaning of the word marked with <WSD> tags:  A winged creature attending on God, described by (Pseudo-Dionysius the Areopagite) ((short=yes)) as the second highest order of angels, ranked above thrones and below seraphim; similar to a lamassu in the pre-exilic texts of the Hebrew Bible, more humanoid in later texts.