(From a Lutheran book on prayers for each day, early 20th C.)
Arise, dear soul, and carefully reflect who He is with whom thous speakest and before whom thou standest when thou prayest. Behold, thou speakest with God, thy Maker, and standest in the presence of Him, the eternal Majesty, whom thousand times thousand holy angels and archangels attend. Therefore, O Christian, enter thou into the closet of thy soul, and beware, lest thou failest to put from thee all sluggishness of heart, and lightest up to thy God a countenance free from blame. Then wilt thou delight in the lord and have power with Him, and prevail. Amen.