Because of the selfish indulgence of some within the church, the poor were being humiliated during the Lord’s Supper (1 Corinthians 11.22). Such sins are so serious that they call forth the Lord’s judgment and discipline (1 Corinthians 11.29-34).
Yet, we also see that the good news about Jesus (the gospel) has power to pardon sin and transform hardened hearts. Jesus has secured our forgiveness by giving His body and blood for us (1 Corinthians 11.24-25; cf. Luke 22.17-20). When we “remember” Him through the Lord’s Supper, we remember His great act of love – and we proclaim that we need the power of the Lord’s death to strengthen us “until He comes” (1 Corinthians 11.26), just as we need food (“the bread”) and drink (“the cup”) to sustain our bodies. Only through His power are we able to honor the least privileged (“those who have nothing,” 1 Corinthians 11.22) and prioritize the good of others before our own (“wait for one another,” 1 Corinthians 11.33).
From: Daily Devotional New Testament: Through the New Testament in a Year (Wheaton: Crossway, 2014), p. 143. Commenting on 1 Corinthians 11.17-34.