While in his early 20s, Campbell wrote several moral essays under the pseudonym "Clarinda."
and published them in a local paper.
In 1820, his debate with the Presbyterian John Walker was published, reminding him of the efficacy of writing and publishing.
He bought a press and built a small print shop in 1823, establishing what proved to be a successful publishing operation.

Campbell edited and published two journals.
The first was the Christian Baptist, which he edited from 1823 through 1830.
The second was The Millennial Harbinger, which he began in 1830 and continued to edit until his death in 1866.
He became less active in it during the 1850s.
In both, he advocated the reform of Christianity along the lines as it was practiced on the American frontier.
He encouraged contributions by writers who thought differently from him, and the journals encouraged a lively dialogue about issues in the reform movement.

Campbell expanded his printing operation in 1830 for the Millennial Harbinger.
 The change from the Christian Baptist to the Harbinger was prompted by several concerns.
Differences of opinion were arising between Campbell and the Baptists, and in many cases Baptist associations were expelling persons connected with the Campbell movement.
He was concerned that "Christian Baptist" – which he considered to be less appropriate than the biblical term "Disciples" – was becoming the de facto name of the group.
He also wanted the new journal to have a more positive tone, promoting reform and preparing the world for the millennium and the second coming of Christ.

Campbell wrote several books, including The Christian System.
He also wrote hymns, including "Upon the Banks of Jordan Stood".
Campbell compiled and published a translation of the New Testament under the title The Living Oracles.
Published in 1826, it was based on an 1818 translation by George Campbell, James MacKnight and Philip Doddridge, and included edits and extensive notes by Campbell.
While in his early 20s, Campbell wrote several moral essays under the pseudonym "Clarinda." and published them in a local paper. In 1820, his debate with the Presbyterian John Walker was published, reminding him of the efficacy of writing and publishing. He bought a press and built a small print shop in 1823, establishing what proved to be a successful publishing operation.
Campbell edited and published two journals. The first was the Christian Baptist, which he edited from 1823 through 1830. The second was The Millennial Harbinger, which he began in 1830 and continued to edit until his death in 1866. He became less active in it during the 1850s. In both, he advocated the reform of Christianity along the lines as it was practiced on the American frontier. He encouraged contributions by writers who thought differently from him, and the journals encouraged a lively dialogue about issues in the reform movement.
Campbell expanded his printing operation in 1830 for the Millennial Harbinger.  The change from the Christian Baptist to the Harbinger was prompted by several concerns. Differences of opinion were arising between Campbell and the Baptists, and in many cases Baptist associations were expelling persons connected with the Campbell movement. He was concerned that "Christian Baptist" – which he considered to be less appropriate than the biblical term "Disciples" – was becoming the de facto name of the group. He also wanted the new journal to have a more positive tone, promoting reform and preparing the world for the millennium and the second coming of Christ.
Campbell wrote several books, including The Christian System. He also wrote hymns, including "Upon the Banks of Jordan Stood". Campbell compiled and published a translation of the New Testament under the title The Living Oracles. Published in 1826, it was based on an 1818 translation by George Campbell, James MacKnight and Philip Doddridge, and included edits and extensive notes by Campbell.
Alexander Campbell (minister)