This is from stanza 17 of Canto I of the poem Don Juan by the English poet Lord Byron. In it he describes a woman named Donna Inez. A garrison is a military post.
Oh! She was perfect past all parallel―
Of any modern female saint’s comparison;
So far above the cunning powers of hell,
Her guardian angel had given up his garrison…
5. What figure of speech does the poet use?
6. What in the stanza do you base that on?