We see Dante and Cavalcanti praising their true loves. We see the same in Michaelangelo and we see Petrarch too going gaga over Laura. But in England we find the sonnet becoming a vehicle fit for spreading in the world as it goes beyond this in Shakespeare's praise of poetry, the sonnet and the power of creation and writing, in Milton taking on the questioning of and explaining of God's ways to me(n), and taking on the might of the Catholic Church, in Wordsworth who offers a tribute to England and Milton as well as to Nature and to London.
Composed upon Westminster Bridge, September 3, 1802
Keats carried this nature of a sonnet being a tribute to something or someone started by Surrey's sonnet to Wyatt after his death (left unquoted) one step further in his sonnet on Homer in translation by Chapman, walking a deeper road whereby now not only writing and literature matters or Milton and Nature or the city but so do the classics, their authors and translation with his first metaphor that reading is a journey through "realms of gold", so he surprisingly privileges the act of reading too. This is really to bring in the note of Romanticism in a way similar to Wordsworth's paean to the "pagan".
On First Looking into Chapman's Homer
“Bright star, would I were stedfast as thou art”
"Light feet, dark violet eyes, and parted hair,
Soft dimpled hands, white neck, and creamy breast."
This sensuous strain Keats had, and a man of his poetic powers could not, whatever his strain, but show his talent in it. But he has something more, and something better."
And what was better in him, as Arnold sees it, resurfaces in Arnold's famous "Dover Beach", therefore.
Thus, Keats' "The moving waters at their priestlike task
https://www.poetryfoundation.org/poems/43588/dover-beach