Get rid of the old yeast that you may be a new batch without yeast - as you really are. For Christ, our Passover lamb, has been sacrificed.
(1 Corinthians 5.7)
The central problem that Paul was dealing with among the Corinthians has been identified in 1 Corinthians 4.8: ‘we’ve arrived!’ This is continued in chapter 5, by this emphasis in 1 Corinthians 5.7, on the paschal lamb. We haven’t arrived. We’ve embarked on a journey.
Some people get to the starting line, take one step, and say ‘that’s that then!’ The Corinthians had fallen for this. They thought they had arrived. No-one was fooled but themselves.
Today, people are looking for a meaningful journey to enter and engage in. Most searchers are not looking to join a club who know they are right. People look for leadership and direction. They need to find people who are followers, not simply believers in, Jesus Christ.