Rock of Ages, no not the Def Leppard song

Rock of Ages, cleft for me, let me hide myself in thee;
let the water and the blood, from thy wounded side which flowed,
be of sin the double cure; save from wrath and make me pure.

Not the labors of my hands can fulfill thy law's commands;
could my zeal no respite know, could my tears forever flow,
all for sin could not atone; thou must save, and thou alone.

Nothing in my hand I bring, simply to the cross I cling;
naked, come to thee for dress; helpless, look to thee for grace;
foul, I to the fountain fly; wash me, Savior, or I die.

While I draw this fleeting breath, when mine eyes shall close in death,
when I soar to worlds unknown, see thee on thy judgment throne,
Rock of Ages, cleft for me, let me hide myself in thee.

-- written by Augustus M. Toplady, a few years before his death at the ripe old age of 38.