Sentence:  […] and nearer view/ Bristled with upright beams innumerable/ Of rigid spears, and helmets throng'd, and shields/ Various, with boastful <WSD>argument</WSD> portray'd,/ The banded pow'rs of Satan hasting on/ With furious expedition; […] 
Meaning of the word marked with <WSD> tags:  The subject matter of a discourse, writing, or artistic representation; theme or topic; also, an abstract or summary, as of the contents of a book, chapter, poem.