O God, you called your servant Louis of France to an earthly throne that he might advance your heavenly kingdom, and gave him zeal for your church and love for your people: Mercifully grant that we who commemorate him this day may be fruitful in good works and attain to the glorious crown of your saints; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.
— Book of Common Prayer