O heavenly Father, the author and fountain of all truth, send, we beseech Thee, Thy Holy Spirit into our hearts, and lighten our understandings with the beams of Thy heavenly grace. We ask this, O merciful Father, for Thy dear Son, our Saviour, Jesus Christ’s sake.
–Frederick B. Macnutt, The prayer manual for private devotions or public use on divers occasions: Compiled from all sources ancient, medieval, and modern (A.R. Mowbray, 1951)