Of all the people in Jesus' story, John the Baptist seems least likely to have doubts...and yet the Bible is clear that he struggled for a time. His story is helpful for understanding similar moments in our lives but also to define greatness much differently than our world.
Looking at the life of Jesus through the eyes of those who were there provided Luke an opportunity to learn about our Savior. If we hope to grow at being like Jesus today we need to gain insight through his pen as well.