Many people think of Gwahoddiad as a Welsh hymn but it is derived from an American hymn, “I Am Coming, Lord!” by an Lewis Hartsough, an American Methodist Minister. It was translated into Welsh by John Roberts (Ieuan Gwyllt ) 1822–1877.

English:

I hear Thy welcome voice That calls me, Lord, to Thee, For cleansing in Thy precious blood That flowed on Calvary.

I am coming Lord! Coming now to Thee! Wash me, cleanse me in the blood That flowed on Calvary!

Though coming weak and vile, Thou dost my strength assure; Thou dost my vileness fully cleanse, Till spotless all, and pure.

'Tis Jesus calls me on To perfect faith and love, To perfect hope and peace and trust, For earth and Heav'n above.

'Tis Jesus Who confirms The blessèd work within, By adding grace to welcomed grace, Where reigned the power of sin.

And He the witness gives To loyal hearts and free That every promise is fulfilled, If faith but brings the plea.

All hail! atoning blood! All hail! redeeming grace! All hail! the gift of Christ our Lord, Our Strength and Righteousness.

Welsh Original

Mi glywaf dyner lais, Yn galw arnaf fi, I ddod a golchi ‘meiau gyd, Yn afon Calfari.

Byrdwn

Arglwydd, dyma fi Ar dy alwad di, Golch fi’n burlan yn y gwaed A gaed ar Galfari.

Yr Iesu sy’n fy ngwadd, I dderbyn gyda’i saint, Ffydd, gobaith, cariad pur a hedd, A phob rhyw nefol fraint.

Yr Iesu sy’n cryfhau, O’m mewn Ei waith trwy ras; Mae’n rhoddi nerth i’m henaid gwan, I faeddu ‘mhechod cas.

Gogoniant byth am drefn, Y cymod a’r glanhad; Derbyniaf Iesu fel yr wyf, A chanaf am y gwaed.