Almighty God, who didst inspire thy servant Luke the physician to set forth in the Gospel the love and healing power of thy Son: Graciously continue in thy Church the like love and power to heal, to the praise and glory of thy Name; through the same thy Son Jesus Christ our Lord, who liveth and reigneth with thee, in the unity of the Holy Spirit, one God, now and for ever.
–Gregorian Sacramentary