We shall be spared of God’s chastening if we will examine our lives and repent of our sins. The institution of the Lord’s Supper enables believers to take the time to examine their lives before God on a regular basis. This is a means of grace whereby the people of God may judge themselves and find forgiveness with God. The Lord is gracious and merciful to those who are willing to surrender their lives to God.

William MacDonald observed well, “Having discussed the origin and purpose of the Lord’s Supper, the apostle now turns to the consequences of participating in it wrongly. Whoever eats this bread or drinks this cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord. We are all unworthy to partake of this solemn Supper. In that sense, we are unworthy of any of the Lord’s mercy or kindness to us. But that is not the subject here.”

The instruction for self-examination preceding the partaking of the Lord’s Supper is clearly taught here in Scripture. It is a solemn feast as we remember Christ’s body broken and blood shed for the remission of our sins. While we have been saved to the uttermost by the finished work of Christ on the cross which we commemorate at the holy feast, in our daily life and living, we may have transgressed the holy commandments of God. We need to confess our sins and ask for the Lord’s forgiveness.

William MacDonald observed well, “The Lord’s Supper was instituted immediately after the Passover Feast. That is why it says that the Lord Jesus took the cup after supper. In connection with the cup, He said that it was the new covenant (testament) in His blood. This refers to the covenant that God promised to the nation of Israel in Jeremiah 31:31–34.”

What is the Lord’s Supper? According to the Westminster Shorter Catechism, the Lord’s Supper is a sacrament, wherein, by giving and receiving bread and wine, according to Christ’s appointment, his death is shewed forth; and the worthy receivers are, not after a corporal and carnal manner, but by faith, made partakers of his body and blood, with all his benefits, to their spiritual nourishment, and growth in grace.

The Apostle Paul rehearsed the doctrine of the Lord’s Supper for the Corinthian Church so that it may strengthen their spiritual life when it is observed with understanding. He has counselled them to refrain from their wanton feasting in the church of God that brings dishonour to God’s Name. He recounted the solemn occasion when our Lord Jesus Christ instituted the Lord’s Supper. It was on the night of the Passover in which Judas Iscariot would betray Him.