Donne addresses Death and defies it to its face: it is not «Mighty and dreadfull», for those it thinks it overthrows do not really die. The poem is a duel — a man standing up to death with the sharp logic of the metaphysical poets.
Death, he argues, is no more than a sleep — and there are better sleeping draughts, «poppie, or charmes» — and it is a slave to «Fate, Chance, kings, and desperate men». The closing couplet turns everything over: «One short sleepe past, wee wake eternally, / And death shall be no more, Death, thou shalt die.» Faith made defiance.