The 150 Psalms were once the prayer and hymn book of the Old Covenant and were adopted by the Church of the New Covenant. They play an important role in Christian liturgy, especially in the church's daily prayers. From 1941 to 1949, Romano Guardini translated the Psalms into modern language, which is particularly well-suited for vibrant liturgy, reading, recitation, and singing. This translation is a linguistic masterpiece by one of the most significant theologians of the 20th century.