Rock of Ages

"Rock of Ages,
cleft for me,
Let me hide myself in Thee;

[...]

make me pure.

Could my tears forever flow,
Could my zeal no langour know,
These for sin could not atone;
Thou must save, and Thou alone.
In my hand no price I bring;
Simply to Thy cross I cling.

While I draw this fleeting breath,
When my eyes shall close in death,
When I rise to worlds unknown
And behold Thee on Thy throne,
Rock of Ages, cleft for me,
Let me hide myself in Thee."