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.
Let Thy mercy, O Lord, be upon us, and the brightness of Thy Spirit illumine our inward souls, that He may kindle our cold hearts, and light up our dark minds; who abideth evermore with Thee in Thy glory. Amen.