Analysis of To Mrs. Unwin

Mary! I want a lyre with other strings,
Such aid from heaven as some have feigned they drew.
An eloquence scarce given to mortals, new
And undebased by praise of meaner things,
That ere through age or woe I shed my wings,
I may record thy worth with honour due,
In verse as musical as thou art true,
And that immortalises whom it sings.
But thou hast little need. There is a book
By seraphs writ with beams of heavenly light
On which the eyes of God not rarely look,
A chronicle of actions just and bright;
There all thy deeds, my faithful Mary, shine;
And, since thou own'st that praise, I spare thee mine.