Bringing unconfessed sin to the table carries dangerous biblical consequences. Communion and self-examination carry severe stakes, an issue the Apostle Paul aggressively corrected in 1 Corinthians 11. Rampant gluttony and deep class divisions during fellowship meals in Corinth twisted the Lord’s Supper into a self-gratifying mockery of Christ's sacrifice. Misunderstanding this sacred ordinance deeply threatens the spiritual health of believers today. Approaching the table without performing a proper scriptural evaluation transforms a holy celebration into a dangerous spiritual liability.

Source Article: https://www.gotquestions.org/examine-yourself.html