A new book by Craig Munro Wilson, a Presbyterian minister and doctoral scholar, argues that a two-day debate in 1820 between two Ulster-Scottish ministers was not a regional curiosity but the opening engagement in a theological war that shaped American Christianity. Wilson's book, Baptize America, published in time for America's 250th anniversary, is the first in-depth examination of the Campbell-Walker debate since its original publication in 1824.
The debate took place on June 19-20, 1820, in a Quaker meeting house in Mount Pleasant, Ohio, where approximately two thousand people gathered to hear Alexander Campbell and Rev. John Walker argue about baptism. Campbell argued against infant baptism from a two-covenant theological framework, while Walker defended covenantal infant baptism. Neither man conceded, and the published record sat largely untouched for two centuries.
Wilson, a paedobaptist Presbyterian minister from Co. Donegal, spent more than a decade reconstructing the confrontation. He holds a doctorate from the University of Glasgow, Alexander Campbell's alma mater, and is the first scholar to examine the debate in depth. His book places the debate inside three interlocking contexts: the biographical arc of Campbell's early ministry, the ecclesiastical tensions of frontier Presbyterianism and Baptist life, and the broader societal conditions of the American frontier.
According to Wilson, the frontier was not simply a geographic edge but a contested space where questions of faith, covenant, and national identity were being settled in real time. One of the book's central contentions concerns a theological shift that has gone largely unremarked. In 1820, both Campbell and Walker understood baptism as a sign rather than a sacrament capable of conferring grace. Wilson traces how Campbell moved toward full sacramentalism by 1843, a journey Wilson argues Evangelical Christianity, particularly within the Reformed tradition, has yet to complete.
The title Baptize America is drawn from a contemporary revival movement initiated in 2023 by Pastor Mark Francey, which set out to baptise Californians en masse on Pentecost Sunday before expanding nationally. Wilson connects that movement to Campbell's mature theological conviction that the mass baptism of the American people was bound up with the millennial future of the nation. What reads as a modern headline is, Wilson demonstrates, a very old idea.
Wilson's book is published as the United States enters its 250th year, a moment he uses deliberately, not decoratively. The frontier Campbell and Walker debated on is long gone, but the questions they argued over are not.
