Great thread... "Baptist Distinctives" who developed this idea? According to Bush and Nettles, these are ideas formulated well after the establishment of the Baptists:
"Early Baptists did not think exclusively in terms of Baptist distinctives. They affirmed Christian doctrines. They believed that they were being true to Scripture in their view of the ordinances, their view of God, and so forth, and they called on other Christians to join them in their faithfulness." Baptists and the Bible (Revised and expanded) (341). Nashville, TN: Broadman & Holman Publishers. my emphasis
I have at least two thoughts on this...
1) I believe that Confessional Baptist origins has been replaced by a list of "distinctives" which relates more to polity than it does doctrine. The Reformed Baptists and SBC Founders Movement have worked to get us back to our Confessional/Creedal roots.
2) No two authors agree as to what the "Baptist Distinctives" are. This is a problem. They have considerable overlaps, but each author likes to interject his own idea. The Southern Baptists in the 1960s developed this popular acronym:
Biblical Authority
Autonomy of the Local Church
Priesthood of the Believer
Two Ordinances
Individual Soul Liberty
Saved Church Membership
Two Offices: Pastors and Deacons
Separation of Church and State
Example 1: in 2005, one author (R. Stanton Norman) included "The Lordship of Jesus Christ" as a Baptist Distinctive. Until that book, I have NEVER seen this as a main point.
Example 2: I was taught that Separation was both Ecclesiastical AND Personal. This was an attempt to embrace 1970s fundamentalist standards as part of being a "Baptist."
While it is a good acronym, I fear that most stop there. They do not realize that a reliance on this acronym as a definition of "Baptist" actually makes polity more important than doctrine.