In 68 CE, devout Jews left more than one thousand handwritten documents in caves northwest of the Dead Sea. The cave that most defined the beliefs and hopes of these Jews is Cave I. In it were placed many manuscripts, including two copies of the Qumran Psalter or Thanksgiving Hymns. In 1947, Bedouin shepherds found Cave I and retrieved scrolls, including a copy of the Qumran Psalter. It proves Jews created new psalms to complement the Davidic Psalter...