“A good introduction serves at least three purposes.First, it awakes interest, stimulates curiosity and makes us long to know God’s perspective on this matter. Secondly, it enables the listeners to sense that they are listening to someone who is qualified to speak for God from this text . . . Thirdly, it introduces the dominant idea and leads the hearers into it”
Stott, The Challenge of Preaching, pp. 69-70