With the first volume of the commentary, Hermann Spieckermann presents a detailed overview of Psalm research from the 19th century to the present. At the same time, Spieckermann presents the theology of the Psalms in detail. In the interpretation of the first third of the Psalter, Psalms 1-49, the commentator pays particular attention to the profile of the content, the poetic design, the literary development and the time-spanning topicality of the prayers. The commentary aims to be of help to all who value the Psalms and want to make use of them in understanding and prayer.