This is my playes last scene, here heavens appoint
My pilgrimages last mile; and my race
Idly, yet quickly runne, hath this last pace,
My spans last inch, my minutes latest point,
And gluttonous death, will instantly unjoynt
My body, and soule, and I shall sleepe a space,
But my'ever-waking part shall see that face,
Whose feare already shakes my every joynt;
Then, as my soule, to'heaven her first seate, takes flight,
And earth-borne body, in the earth shall dwell,
So, fall my sinnes, that all may have their right,
This is a crucial line, a dramatic climax that expresses Donne’s real fear about his ‘sinfulness’. He doesn’t specify what that sin might be, but what is known is that, when young, he had a strong sexual appetite. It is something that would be regarded as acceptable today, but needs to be understood in a seventeenth century context to grasp the emotional basis of Donne’s poetry. 
 The semi=-colon after ‘joynt’ forms a  caesura  or break that is the  volta  in this poem.
This is my playes last scene here heavens appoint Holy Sonnet VI