Henry Vaughan - Anguish

My God and King! to Thee
I bow my knee;
I bow my troubled soul, and greet
With my foul heart thy holy feet.
Cast it, or tread it! it shall do
Even what thou wilt, and praise thee too.

My God, could I weep blood,
Gladly I would,
Or if thou wilt give me that art,
Which through the eyes pours out the heart,
I will exhaust it all, and make
Myself all tears, a weeping lake.

O! 'tis an easy thing
To write and sing;
But to write true, unfeigned verse
Is very hard! O God, disperse
These weights, and give my spirit leave
To act as well as to conceive!

O my God, hear my cry;
Or let me die!

Henry Vaughan

http://www.poemhunter.com/poem/anguish-19/