I am a little world made cunningly
Of Elements, and an Angelike spright,
But black sinne hath betraid to endlesse night
My worlds both parts, and (oh) both parts must die.
You which beyond that heaven which was most high
Have found new sphears, and of new lands can write,
Powre new seas in mine eyes, that so I might
Drowne my world with my weeping earnestly,
Or wash it if it must be drown'd no more;
He attests to God’s power to create new worlds and new lands–indeed creating within Donne himself a new Donne, one that isn’t sinful but living a love of God through a newly created fiery zeal. 
 The reference to the ‘spheres’ and ‘new lands’ is typically Metaphysical.  Traditional religious tropes are blended with new contemporary discoveries. Here it is God rather than man that has written of ‘new lands’.
I am a little world made cunningly Holy Sonnet V