Though the “Book of Praises” was gathered during the OT era and used in the Temple’s worship, its full intent as a canon of praise could not be fully grasped until Christ came. Its intent was to reveal and praise the Savior-King who would fulfill all the promises of God’s covenant with Israel. Jesus Christ must therefore be understood as the Sovereign of the Psalter, but also as the source of and the purpose for the development of the canon of the Psalter.
RPCNA Synodical Study Committee on Worship, “The Psalms in the Worship of the Church.” Submitted to the Synod of the RPCNA, June 2004. (HT: Dan Kok)