The story behind the hymn
Augustus Toplady was converted at sixteen in an Irish barn, listening to an uneducated lay preacher — a circumstance he loved to recount against every notion that God needs impressive means. He became a Church of England clergyman in Devon, and one of the age's most combative defenders of salvation by grace alone.
Tradition says the hymn was born when Toplady sheltered from a storm in a cleft of the limestone gorge at Burrington Combe in the Mendips — a rock of ages literally split for him. Whatever the truth of the story, the hymn's logic is unmistakably his: nothing in the sinner's hands, everything in Christ's wounds. Could my zeal no respite know, could my tears for ever flow, all for sin could not atone: thou must save, and thou alone.
He published it in 1776 in The Gospel Magazine, appended — with characteristic edge — to an article calculating that a man sinning every second would owe an unpayable debt of millions of sins, the point being that only an infinite payment avails. Toplady died of tuberculosis two years later, thirty-eight years old, testifying that he was the happiest man in the world. The hymn has been sung at gravesides ever since: while I draw this fleeting breath, when mine eyes shall close in death.
The lyrics
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.
Could my tears for ever flow,Could my zeal no languor 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 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.
Public domain. Free to sing, copy, print, and share.
The Scripture behind it
And it shall come to pass, while my glory passeth by, that I will put thee in a clift of the rock, and will cover thee with my hand while I pass by:
Hidden in the cleft of the rock while glory passes — the hymn's controlling image.
But one of the soldiers with a spear pierced his side, and forthwith came there out blood and water.
The water and the blood from the wounded side — stanza one quotes the crucifixion's strangest detail.
And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.
And that Rock was Christ — Paul's identification, the hymn's warrant.