There I should see a Sunne, by rising set,
And by that setting endlesse day beget;
But that Christ on this Crosse, did rise and fall,
Sinne had eternally benighted all.
Yet dare I'almost be glad, I do not see
That spectacle of too much weight for mee.
Who sees Gods face, that is selfe life, must dye;
What a death were it then to see God dye?
It made his owne Lieutenant Nature shrinke,
It made his footstoole crack, and the Sunne winke.
Could I behold those hands which span the Poles,
And tune all spheares at once, peirc'd with those holes?
Could I behold that endlesse height which is
Zenith to us, and to'our Antipodes,
Humbled below us? or that blood which is
The seat of all our Soules, if not of his,
Donne reinforces the idea of vastness with the idea of infinity in ‘endlesse height’. Man is ‘humbled’ below such magnificence. 
 This is the second of three questions, the first two beginning with ‘Could I’, providing dramatic repetition. The answer, of course, we know is that he couldn’t.
Good-Friday 1613 Riding Westward