"The Assyrian came down like the wolf on the fold"
"Spears was like stars on the sea"
"Like the leaves of the forest"
This convets the Assyrians as merciless preditors in the use of a SIMILE. This makes the reader pity the Jews.The first stanza is a Quatrain, an upbeat rhythm which contradicts the tragic subject.
"Angel of Death"
The use of sibilance and simile that emphasizes how many there were. The sibilance gives a hissing effect which can correlate with snakes-mischevious, devil-like.
The repetition of the simile shows that despite power of man, nature will always indure. AABB rhyming schemes. The use of couplets drives the poem with a persistent regular rhythm whilst also mimicing the charging. A rhythm that is regular and simple is contrasted with something complicated(war) emphasizes how onserd war is.
Arcaic language reflects on the Biblical story from The Old Testament.