(O Kind Creator, Bow Thine Ear) Hymn for Vespers on Sundays and week-days in Lent. Pope Saint Gregory the Great (540-604) was its author. There are 22 translations. The one given in Britt is by T. Lacey; the fourth verse reads:

Give us the self-control that springs

From discipline of outward things,

That fasting inward secretly

The soul may purely dwell with Thee.