We do not know who actually wrote this gospel. From the author's own acknowledgement, we know that they were not an eyewitness of Jesus' ministry. Three times the letters attributed to St. Paul mention someone named Luke as one of his traveling companions. So this is the name that stuck since the second century. In any event, the Lukan narrative is in well-written Greek and shares some of the qualities of ancient histories and biographies. It tells the stories of Jesus' words and deeds in both an edifying and entertaining way.
In Luke the chief title for Jesus is "Lord" (Kyrious in Greek), which appears some three dozen times. Mark, by comparison refers to Jesus as "Lord" only about six times. The main idea of this title was not so much that of a master who rules over others, as that of a benefactor, the one whose purpose is to enhance the welfare of the people of Israel, or the citizens in the empire, or of the members of the family. By pinning the title of "Lord" on Jesus, Luke pictures him as a great benefactor, as one who brings the blessings of wholeness and peace, joy, and salvation into the world.
During the coming lectionary year, we will read eight parables which will include parables like "The Prodigal Son" and "The Good Samaritan" and others which are only found in the gospel of Luke.
In spite of opposition and persecution, undercurrents of joy and prayer run through Luke. These reflect the correct response that we as faith-filled people make to our Lord as we continue to enjoy his benefactions and share them with others. It is easy to see Luke's agenda for creating a more just and compassionate world. Luke's gospel challenges us and compels Lus to live out our values in ways that will bring divine benefits to all humankind.