I would believe the literary device is would either be a metaphor or an onomatopoeia because of the “ah”
the holy ghost is being compared to a bird to some extent
this helps you understand the physical Appearance of the ghost, it is flying over people, watching, preying almost.
Formal approach is the best tone to use.
Hope this helped.
Read the poem just now. The last two lines of each stanza gives the reader a sense of hope and inspiration (in my case).
The word you could possibly be looking for is "intent"
Answer:
Aphorism
Explanation:
Anagram is a word, phrase, or name formed by rearranging the letters of another. I don't think this is it because they is no words that were rearranged.
Aphorism is a pithy observation that contains a general truth. This could be true!
Analogy is a comparison between two things. This is not it because there are not two things being compared.
Allusion is an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference. This is not it because this sentence is explicit meaning it is very straight foward.
Out of all four of those... I would go with Aphorism.