The Presbyterian Reformed Church holds to the belief that the Scriptures of the Old and New Testaments are the infallible Word of God. The office-bearers must adopt and hold the original 1646 edition of the Westminster Confession of Faith, the Westminster Larger Catechism and the Westminster Shorter Catechism as standards subordinate to the Bible. The office-bearers also accept the Westminster Directory of Public Worship as a scriptural and suitable guide in the conduct of public worship. Therefore, psalms are sung in public worship solely and without instrumental accompaniment, and the Scottish Metrical Psalter of 1650 is used solely in the public singing of psalms. The Authorized King James Version of the Bible is the stated text for public reading.