For Strength

O Lord,
be our Sanctifier and the Shepherd.
Strengthen and help us,
that in our daily life walk with you,
we serve you in all quietness of spirit;
through Jesus Christ our Master. Amen.

Source: Roman Breviary, 11th Century
Source of this version: Freely modified from Prayers of the Middle Ages, edited by J. Manning Potts, 1954.