For Firm Faith

Arise, O Lord,
Judge of all the earth.
Since you are the light who enlightens the Gentiles,
do not allow us to remain in darkness.
Establish the foundation of our faith
on you, our steadfast rock,
not on the sand
where wind and wave
will overcome it. Amen.

Source: Mozarabic Liturgy

Source of this version: Freely modified from Prayers of the Middle Ages, edited by J. Manning Potts, 1953.