The term GOSPEL SOURCE can be broken down into two crossword solutions: BIBLE (5 letters) and Luke (4 letters). The BIBLE is the holy book of Christianity, containing the Old and New Testaments. It is the source of many Christian beliefs and teachings. The Gospel of Luke is one of the four canonical gospels in the New Testament. It is attributed to the author Luke, a companion of Paul the Apostle, and is the longest of the four gospels. It is the only gospel that contains the story of the Nativity of Jesus.