The gospel of Luke is the first installment of the 2 volume work of Luke-Acts. Luks's account describes the good news in terms of God's work in the person, live, death, resurrection and ascension of Jesus Christ.The second volume points to the power fo the gospel in forming a renewed people of God.
The primary purpose of Luke's gospel is to strengthen and confirm the faith fo the early Christains. He writes so that Theophilus (and other readers) "may know the certainty fo the things" that they have been taught (1:4). Our lessons will then focus on this strong appologetic thone, as we discover and unpack the exact "things" that require affimation of faith.