David Nelson wrote a great piece on why he holds to an open communion view. I appreciate that this is not merely a theoretical argument but a practical one, lived out through an example of the gathered church and reflective of what Scripture teaches, rather than what our tradition teaches.
Here is a sample (speaking of closed communion):
This, it seems to me, is actually antithetical to the gospel. The gospel welcomes the stranger, and it not only crosses but obliterates boundaries. The gospel invites people of faith to unity and harmony. If this be true, then how can the central ecclesial sign of the gospel be construed to show division and even disharmony? And how does placing a fence around the Table do anything but divide the Christian community, which is made one by Christ in the Spirit, formed in unity in Christian baptism (Eph 4:4-6) and existing as one body represented by the one loaf (1 Cor 10:17).
Here is his excellent rationale for an open communion:
I don’t hold to close communion – I prefer open communion. My rationale is as follows.
The Table is for the body of Christ – those who trust Jesus alone for their salvation and who, having called upon the Lord for mercy, are by the Spirit placed into union with the triune God and with His church (1 Cor 12:13). On that basis I would welcome all believers to the Lord’s Table (I have done so as a pastor). The Table is His, not mine; it is His, not some denomination’s; it is His, given to the Church under His Lordship. It is only our Table inasmuch as by the grace of Christ we are invited to come.
Therefore, I want to “sign” the gospel at the Table by inviting all of God’s people to eat there. I realize that this means I will eat with those who are different than I and with whom I may disagree on certain points of doctrine. But since the cross obliterates boundaries and divisions, and since the Table signs that cross, I think it is most consistent with the gospel to invite the church – the whole church – to the Table.
Of course, this makes for a less tidy meal than some may like. And, like at holiday dinners with family, little Johnny may smear his potatoes and peas on the chair, and dear old Uncle Eddie may drool food into his lap. Family meals can be messy that way.
But I’m less concerned with having a tidy meal than having a good meal. One that is most consistent with the nature of the gospel. So I’m happy to invite all believers to the Table, to allow them to exercise their conscience vis-à-vis 1 Corinthians 11, and to allow the grace of Christ to reign at His Supper.
I say amen to that! The Supper is a sign of our community as believers in Jesus Christ, not some sort of ceremony to divide others from us. Those who hold to a closed communion based on "church membership" in a particular local organization are placing barriers that are without Scriptural support and are guilty of placing an additional burden for fellowship ("membership") that doesn't exist in Scripture.
(HT: Les Prouty)