From Nathan Bingham at Ligonier:
The Christian life is the examined life, the life that takes seriously the call to repentance and the promise of forgiveness (1 John. 1:8-9; 1 John 2:1). Unfortunately, there are those who deny the grace of repentance by hardening their hearts and refusing to forgive or be forgiven. Those who refuse to acknowledge their sin, but harbor bitterness, malice, and hatred in their hearts, and refuse godly counsel toward reconciliation with God and others, and thus neglect the grace of repentance—let them refrain from the Lord’s Table. Otherwise, to eat and to drink in such a state is to call forth the disciplining hand of God (1 Cor. 11:32).