1 Corinthians 11:17

Now in this that I declare - In this that I am about to state to you; to wit, your conduct in regard to the Lord’s Supper. Why this subject is introduced here is not very apparent. The connection may be this. In the subjects immediately preceding he had seen much to commend, and he was desirous of commending them as far as it could be done. In 1 Corinthians 11:2 of this chapter he commends them in general for their regard to the ordinances which he had appointed when he was with them. But while he thus commended them, he takes occasion to observe that there was one subject on which he could not employ the language of approval or praise. Of their irregularities in regard to the Lord’s supper he had probably heard by rumor, and as the subject was of great importance, and their irregularities gross and deplorable, he takes occasion to state to them again more fully the nature of that ordinance, and to reprove them for the manner in which they had celebrated it.

That ye come together - You assemble for public worship.

Not for the better, but for the worse - Your meetings, and your observance of the ordinances of the gospel, do not promote your edification, your piety, spirituality, and harmony; but tend to division, alienation, and disorder. You should assemble to worship God, and promote harmony, love, and piety; the actual effect of your assembling is just the reverse. In what way this was done he states in the following verses. These evil consequences were chiefly two, first, divisions and contentions; and, secondly, the abuse and profanation of the Lord’s Supper.