II. The Assemblies of the Church
D. The Synod
The task of synod includes the adoption of the creeds, of the Church Order, and of the principles and elements of worship. Synod shall approve the liturgical forms, the Psalter Hymnal, and the Bible versions suitable for use in worship. No substantial alterations shall be effected by synod in these matters unless the churches have had prior opportunity to consider the advisability of the proposed changes.
— Cf. Supplement, Article 47