We just recently finished a 20 month series from 1 Corinthians . Wow, what a book! Paul does a masterful job of answering the Corinthians varied questions and crises all from a gospel centered perspective. David Garland says the following about this:
“The cross, its wisdom or its effect, is also pivotal in every issue except the one concerning headdress. It is central to his discussion of factions (1:18-31, 4:8-13) but also appears in his discussion of incest (5:7-8), lawsuits (6:7), sexual immorality (6:20), marriage (7:23), idol meat (8:11), the Lords supper (11:26), spiritual gifts (13:1-13), and the resurrection (15:3). 
In light of the all pervasive influence of Jesus as Savior and Lord, how are we experiencing the message of the gospel? How is it functioning in our lives? How is the truth of Jesus as Savior and Lord impacting us in the nitty gritty of life? 1 Corinthians clearly leaves us with the impression that there is no question or concern where the good news of Jesus as Savior and Lord does not speak.
How should the gospel function in the life of the local church? - Mike Bullmore
The Functional Centrality of the Gospel in the Life of the Local - Mike Bullmore
 David E. Garland, 1 Corinthians, BECNT, Baker Academic, MI, USA, 2003, p. 17