I Corinthians 11:31

if we would judge ourselves--Most of the oldest manuscripts, read "But," not "For." Translate also literally "If we duly judged ourselves, we should not be (or not have been) judged," that is, we should escape (or have escaped) our present judgments. In order to duly judge or "discern [appreciate] the Lord's body," we need to "duly judge ourselves." A prescient warning against the dogma of priestly absolution after full confession, as the necessary preliminary to receiving the Lord's Supper.

In this chapter the apostle blames, and endeavours to rectify, some great indecencies and manifest disorders in the church of Corinth; as, I. The misconduct of their women (some of whom seem to have been inspired) in the public assembly, who laid by their veils, the common token of subjection to their husbands in that part of the world. This behaviour he reprehends, requires them to keep veiled, asserts the superiority of the husband, yet so as to remind the husband that both were made for mutual help and comfort (v. 1-16). II. He blames them for their discord and neglect and contempt of the poor, at the Lord's supper (Co1 11:17-22). III. To rectify these scandalous disorders, he sets before them the nature and intentions of this holy institution, directs them how they should attend on it, and warns them of the danger of a conduct to indecent as theirs, and of all unworthy receiving (Co1 11:23 to the end).

11:31 Self-judgment (which implies confession of sin and repentance) averts God’s judgment.