1 Corinthians 11:17-19

Now in this that I declare unto you I praise you not, that ye come together not for the better, but for the worse. For first of all, when ye come together in the church, I hear that there be divisions among you; and I partly believe it. For there must be also heresies among you, that they which are approved may be made manifest among you (KJV)

Then: Before beginning to talk about women and men's appearances during a worship service, Paul took time for praise (11:2), but here he specifically states disapproval. The church meets for encouragement and spiritual growth of its members, but that's not what happens in Corinth. Paul knows heresies exist in the minds of members before they actually appear and begin dividing believers into groups. Interestingly, Paul's discussion of divisions makes verse 16, which already referred to contentions, a hinge for moving into his next concern about communion. Baker (p. 168) says their actions undermined the purposes of meeting together and made belief in Christ seem trivial.

Now: The same thing happens in today's church's no matter the issue, but if concern centers on communion and practices of observing it, then the issue is just as pivotal to the growth and spiritual life of believers. Today's church profits from the many years in which the church sorted through the myriad of controversies surrounding the Lord's Supper. Those issues are mostly settled.

Extra source: Cornerstone Biblical Commentary 1 Corinthians (William Baker), 2 Corinthians (Ralph Martin & Carl Toney), ed. by Philip Comfort. Carol Stream: Tyndale House Publishers, c2006.