Biblical Presbyterian Presbyteries

Thus the head in each of ten households chooses from those heads one mature male, to be the Elder-over-ten in that local tithing or ward.   Every five Elders-over-ten then in turn choose one Elder-over-fifty.   Next, each two Elders-over-fifty choose one Elder-over-hundred.   Thereafter, each ten Elders-over-hundred choose their one Elder-over-thousand. Finally, all of the Elders-over-thousand are convened to constitute the largest national Ecclesiastical Parliament of the people of God — "the General Assembly of the Church of the firstborn.5

Dimensions

Clearly, then, a Presbytery,  just like the Trinity could consist of as few as three Members.6     Yet it should represent perhaps a minimum of five Sessions of Christ’s Church.   Compare Exodus 18:25's "Rulers-of-fifty" in the Older Testament — with the five Preaching Elders in the Newer Testament which Acts 13:1 mentions within the Presbytery of Antioch.   Optimally, however, some seven Sessions are represented