Hymn 373 from our hymn book, Psalms & Hymns of Reformed Worship.

ROCK of Ages, cleft for me,
Let me hide myself in Thee;
Let the water and the blood
From Thy riven side which flowed,
Be of sin the double cure;
Cleanse me from its guilt and power.

Not the labours of my hands
Can fulfil Thy law’s demands:
Could my zeal no respite know,
Could my tears for ever flow,
All for sin could not atone;
Thou must save, and Thou alone.

Nothing in my hand I bring;
Simply to Thy Cross I cling;
Naked, come to Thee for dress;
Helpless, look to Thee for grace;
Foul, I to the fountain fly,
Wash me, Saviour, or I die.

While I draw this fleeting breath,
When my eyelids close in death,
When I soar to worlds unknown,
See Thee on Thy judgement throne,
Rock of Ages, cleft for me,
Let me hide myself in Thee.

Author: Augustus Toplady (1740-78)
Tune: Ajalon
Composer: Richard Redhead (1820-1901)