First, we should thank God that unbelievers are present. Second, we need to be sensitive and careful to reflect Christ’s heart for the lost. Third, before the distribution of the elements, I suggest that the pastor, or someone who has skill in the public reading of Scripture, read 1 Corinthians 11:23–31. Such a reading will benefit Christians and unbelievers alike.
Finally, as we explain the biblical parameters of participation, why not extend an invitation to unbelievers to trust Jesus as Lord and Savior? If they trust the Lord, then invite them to join us as a part of God’s family and participate with us. Still, even if an unbeliever does participate in the Lord’s Supper, the Lord may use their very participation to convict them of sin and bring them to Himself. The Puritan preacher and pastor Solomon Stoddard, who was the grandfather and pastoral mentor of Jonathan Edwards, converted to Christ while he was receiving communion. We can trust that God will assess the hearts of all who are present and His Spirit will bring conviction, judgment, and salvation as He wills.