Prayers of Invocation for Reformation sunday

O Lord Jesus Christ, who has established your church as the bulwark of true freedom, and has committed to all believers the ministry of reconciliation, continue your work of reforming and cleansing within the church and within our own heart, that being renewed by your spirit your church may bear faithful witness to the gospel, and we live out our days in your service. We pray in your own strong Name. Amen. 

Joseph E. McCabe, Service Book for Ministers, McGraw Hill Book Company, Inc, 1961.