Found this in a Methodist Hymnal of fairly recent vintage; probably 1940-1950 or so. There's an entire section dedicated to the "Dedication of an Organ," a service, or part of a service, dedicating a new instrument.
Apparently it wasn't that long ago that we took this whole "music in church" stuff VERY seriously.
(Bold text = congregation)
In the Name of the Father, and of the Son, and of the Holy Spirit, we dedicate this Organ to the praise of Almighty God.
Praise God in His sanctuary: praise Him in the firmament of His power. Praise Him with the sound of the trumpet; praise Him with psaltery and harp.
We dedicate this Organ to the cultivation of a high art: to be the interpretation of the message of the masters of music, to an appreciation of the great doxologies of the Church, and to the development of the language of praise which belongeth both to earth and to heaven.
Praise Him with stringed instruments and organs. let everything that hath breath praise the Lord. Praise ye the Lord.
We dedicate this Organ to the wedding march, to thanksgiving on festal occasions, and to such inspiration in the service of song that all people may praise the Lord.
O sing unto the Lord a new song: sing unto the Lord all the earth, in psalms and hymns and spiritual songs, singing and making melody in your heart unto the Lord.
We dedicate this Organ to the healing of life's discords, and the revealing of the hidden soul of harmony; to the lifting of the depressed and the comforting of the sorrowing; to the humbling of the heart before the eternal mysteries and the lifting of the soul to the abiding beauty and joy by the gospel of infinite love and good will.
That at the Name of Jesus every knee should bow, of things in heaven, and in things in earth, and things under the earth; and that every tongue shoudl confess that Jesus Christ is Lord, to the glory of God the Father.
Our God and Father, whom the generations have worshipped with concord of sweet sound, be pleased to accept this Organ as a song of praise unto Thee. Amen.
Grant that its music, with accompanying song, may come as a blessed benediction upon all who worship here. Amen.
May this Organ become undying music in the world as its notes of cheer, comfort, communion, and courage are modulated into human lives for daily task and nobile service. Amen.
To all organists who shall sound its notes, and to all worshippers who shall be lifted Godward by its voice, may there come at times the sweep of hallelujahs from the throne of the Redeemed until earth below shall be attuned to heaven above, singing hallelujah to Him who reigneth, Lord of lords, the King of kings. Hallelujah! Amen.