Final answer:
The title of the book of Psalms comes from the term 'Psalter', which refers to copies of the Hebrew Bible's Book of Psalms. Medieval Psalters were often lavishly illustrated, with King David frequently depicted as their author and an ideal king. The Paris Psalter is a prime example of this tradition.
Step-by-step explanation:
The book of Psalms receives its title from the term Psalter, which is used to describe books and manuscripts of the Hebrew Bible's Book of Psalms. The Psalter was commonly copied during the Middle Ages due to its importance in medieval church ceremonies. This particular book, often richly illustrated, featured depictions of King David, who was traditionally regarded as the author of Psalms. He is usually portrayed as a musician and composer to resemble the ideal medieval king.
The Paris Psalter, produced in Constantinople and now housed in Paris, is a notable example. Its illuminations, which include imagery of David playing the harp, served dual purposes. They portrayed literal depictions from the Psalms and provided Christological interpretations, viewing the Psalms as foreshadowing the life of Christ. In medieval church doctrine, such artwork in manuscripts also supported the interpretation of Old Testament texts in the light of Christian beliefs, thus adding layers of meaning to the Psalms.