Y sarff/sarph a'i holl gyfrwysdra sy

Y sarff a'i holl gyfrwysdra sy
Am hudo f'enaid ar bob tu;
  Ymdrechaf ymdrech deg y ffydd:
  Tŵr cadarn imi, Iesu, bydd.

Rho wir oleuni oddifry,
Chwâl ymaith bob tywyllwch dȗ
  O'm mewn cyfoded seren ddydd:
  Tŵr cadarn imi, Iesu, bydd.

O cymer fi'n dy gynhes gôl;
Tyn fi, a rhedaf ar dy ol,
  O ras i ras, o ffydd i ffydd:
  Tŵr cadarn imi, Iesu, bydd.

A phan y bo gelynion llym
Yn rhuthro arnaf yn eu grym,
  A'm henaid dan ei glwyfau'n brudd,
  Tŵr cadarn imi, Iesu, bydd.

Bydd imi'n gymhorth yn mhob lle,
Tra byddwy'n teithio dan y ne':
  Nes ar bob gelyn gario'r dydd,
  Tŵr cadarn imi, Iesu, bydd.

The serpent and all its craftiness is
About luring my soul on every side;
  I will fight the good fight of the faith:
  A strong tower to me, Jesus, be.

Give a true light from above
Scatter away every black darkness;
  From within me may the star of day arise:
  A strong tower to me, Jesus, be.

O take me in thy warm embrace;
Draw me, and I will run after thee,
  From grace to grace, from faith to faith:
  A strong tower to me, Jesus, be.

And whenever fierce enemies are
Rushing upon me in their force,
  And my soul is under its sore wounds,
  A strong tower to me, Jesus, be.

Be to me a support in every place,
While ever I be travelling under heaven:
  Until against every enemy I carry the day,
  A strong tower to me, Jesus, be.