III. The Task and Activities of the Church
A. Worship Services
The consistory shall see to it that the principles and elements of worship approved by synod are observed, including the use of liturgical forms, songs, and synodically approved Bible versions. If liturgical forms are adapted or additional psalms, hymns, and spiritual songs are used in worship, these elements should conform to synodical guidelines.
— Cf. Supplement, Article 52-b