A historical English prayer collected in Prayers of the Middle Ages: Light from a Thousand Years, edited by J. Manning Potts.
Historical edition. Historical claims and instructions are preserved as historical context.
O Lord Jesus Christ, our redemption and our salvation, we praise Thee and give Thee thanks; and though we be unworthy of Thy benefits, and cannot offer unto Thee due devotion, yet let Thy loving-kindness fill up that which our weakness endeavoureth. Before Thee, O Lord, is all our desire, and whatsoever our heart rightly willeth, it is of Thy gift. Grant that we may attain to love Thee even as Thou commandest. Let not Thy gift be unfruitful in us. Perfect that Thou hast begun, give that which Thou hast made us to long after, convert Thou our lukewarmness into fervent love of Thee; for the glory of Thy holy name. Amen.