1 Corinthians 1-3; Galatians 1-3
Most recently, we read that the churches of Ephesus, Colosse and Thessalonica had received accolades for their "faith in Christ and sincere love for all the saints". Even the church at Philippi Paul commended for their "progress and joy of faith" and "having always obeyed, not as in my (Paul's) presence only, but now much more in my absence".
The churches at Corinth and Galatia do not receive the same congratulations. Without condemning them because of their shortfall, Paul certainly rebukes their quarreling; the divisions amongst them based upon which disciple they are following; envy; their turning away from Him who called them in the grace of Christ to a different gospel, even to the point of "bewitching".
In both accounts, Paul reminds them (and us) that we "preach Christ crucified"; "to know nothing among them except Jesus Christ and Him crucified"; "I have been crucified with Christ; it is no longer I who live but Christ who lives in me". Our crucifixion in Christ does not happen when we receive His salvation, the opportunity begins there. Empowered by the Holy Spirit, we "for His sake are killed all day long; we are accounted as sheep for the slaughter. Yet in all these things we are more than conquerors through Him who loved us" (Romans 8:36,37).
"Christ crucified, to the Jews a stumbling block and to the Greeks foolishness". To the natural man, our crucifixion in Christ is foolish, weak and base (not high or lofty). Paul knows that we must be crucified in Him so that the churches may continue to be and the natural man may follow.