Now thou has loved me one whole day
Tomorrow when you leav'st, what wilt thou say?
Wilt thou then antedate some new-made vow?
Or say that now
We are not just those persons which we were?
Or, that oaths made in reverential fear
Of Love, and his wrath, any may forswear?
This line begins with ‘Or’, as do three subsequent lines, forming a refrain or  anaphora . These emphasise Donne’s failure to find answers to his questions.
Womans Constancy