“Holy Sonnets: At the round earth's imagin'd corners, blow” is one of the poems from the collection of poems that are concerned with themes of religion, mortality, self-awareness and need for closeness with the divine. It is a one stanza poem, also known as Petrarchan sonnet, containing twelve lines with a varied rhyme scheme.
From the title itself, the contents of the poem can be predicted as having something to do with religion. Despite being a one stanza poem, there is a content shift in the midst of it, directing the speaker’s attention towards himself. The first part of the poem is about Judgement Day, rising of the dead and meeting God.
In the second part the attention of the poem abruptly shifts and becomes a personal contemplation of the speaker of the poem and his feeling the need to repent. The main theme of the poem is religion and judgement. It also explores the individual, personal need for God and repentance and feeling of guilt for having sinned. The imagery of blood sealing at the very end, to compare the significance of learning how to repent is especially striking and expected of the poet who is fond of hyperbolic language.