Luke connected the life of Jesus with the sweeping story of Scripture, primarily employing Isaiah. The gospel, according to Luke, must begin with the OT.
This principle is especially important for modern storyers of the gospel who are targeting groups that have little previous knowledge of the Scriptures. Worldview issues must be addressed before a proper understanding of Christ can be obtained. Worldview shift begins with a shift in one’s meta-narrative. The modern gospel narrator must present the sweeping story of God found in both Testaments.
In this way people can hear a message that is full and clear. Decisions that are made based on this sort of robust information tend to be deeper and longer lasting. A wonderful way to share the gospel in this way is to use a Creation to Christ approach.