The Lord’s Supper is a privilege of membership in the Christian Church. Therefore, it is the church’s responsibility to admit to the Lord’s Supper only those who have been baptized and publicly confessed their faith in Christ, and are members in good standing of a Bible believing church (Gal. 1:8-9).
It is also the Church’s responsibility to remind all confessing believers of their personal responsibility to examine their hearts before they partake, lest they eat and drink judgement (1 Cor. 11:28-32).
Three questions are especially important when we are examining ourselves. First, “Do I truly feel sorry for my sins, honestly confess them to God, and ask Him to forgive me and help me to overcome them?” Second, “Do I believe in Jesus Christ as My Savior and trust in Him alone to forgive my sins?” Third, “Do I feel thankful for all of God’s goodness and mercy to me, so that I desire to do everything that He wants me to do?” (A First Book of Christian Doctrine).