I'm persuaded that Stellman will perceive particular passages to be puzzling for his present paradigm. For example, I'm sure Stellman realizes that in Roman Catholicism the Eucharist is central. For example:
Eucharist and Priests: The Eucharist is central to the ministry of priests and it is by means of the Eucharist that “they are in communion with Christ the head, and leading others into this communion” (Ad Gentes, 39). The missionary activity of the Church is about the extension of communion through the building up, day by day of the body of Christ.(source)
This should be obvious as well from the title of the blog of Stellman's pals, "Called to Communion." But what is the central aspect of the ministry of Christian elders? Check out the description in Acts:
Acts 6:2-4The word and prayer are the central aspects.
Then the twelve called the multitude of the disciples unto them, and said, It is not reason that we should leave the word of God, and serve tables. Wherefore, brethren, look ye out among you seven men of honest report, full of the Holy Ghost and wisdom, whom we may appoint over this business. But we will give ourselves continually to prayer, and to the ministry of the word.
And again, in 1 Timothy:
1 Timothy 5:17Here the emphasis is on word and doctrine, as well as on administrative ability.
Let the elders that rule well be counted worthy of double honour, especially they who labour in the word and doctrine.
And again, in Titus 1:
Titus 1:1-9Notice again the emphasis on the word and doctrine, as well as the emphasis on moral rectitude.
Paul, a servant of God, and an apostle of Jesus Christ, according to the faith of God's elect, and the acknowledging of the truth which is after godliness; in hope of eternal life, which God, that cannot lie, promised before the world began; but hath in due times manifested his word through preaching, which is committed unto me according to the commandment of God our Saviour; to Titus, mine own son after the common faith: Grace, mercy, and peace, from God the Father and the Lord Jesus Christ our Saviour.
For this cause left I thee in Crete, that thou shouldest set in order the things that are wanting, and ordain elders in every city, as I had appointed thee: if any be blameless, the husband of one wife, having faithful children not accused of riot or unruly. For a bishop must be blameless, as the steward of God; not selfwilled, not soon angry, not given to wine, no striker, not given to filthy lucre; but a lover of hospitality, a lover of good men, sober, just, holy, temperate; holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
And again in 1 Timothy:
1 Timothy 3:1-7Again, teaching aptitude and administrative ability (together with exemplary moral status) are the focus.
This is a true saying, if a man desire the office of a bishop, he desireth a good work. A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach; not given to wine, no striker, not greedy of filthy lucre; but patient, not a brawler, not covetous; one that ruleth well his own house, having his children in subjection with all gravity; (for if a man know not how to rule his own house, how shall he take care of the church of God?) not a novice, lest being lifted up with pride he fall into the condemnation of the devil. Moreover he must have a good report of them which are without; lest he fall into reproach and the snare of the devil.
In fact, while the Lord's supper (and Baptism) are important, they are not closely linked with the roles of bishops/elders in Scripture. While typically these sacraments are administered by elders in Reformed churches, this is not because the Scriptures require it. It is a matter of order in the church, rather than a matter of absolute necessity. For example, Philip (one of the proto-deacons) baptized the Ethiopian eunuch.
In Roman Catholicism, the priests/bishops must administer the Eucharist, because they are priests. That is not the paradigm of the New Testament. The elders/bishops are never referred to as priests. Indeed, in the New Testament properly the only priest is the Lord Jesus Christ. In a sense, we are all priests, but properly it is only the Lord. He is the only mediator between God and man, which necessarily excludes a priestly class.
But Stellman claims that the Roman Catholic paradigm better explains the New Testament. I'm not persuaded.