Editing Albert Benjamin Simpson (section)

==Presbyterian ministry==
After graduating in 1865, Simpson was subsequently ordained in the [[Presbyterian Church in Canada|Canada Presbyterian Church]], the largest of the Presbyterian groups in Canada that merged after his departure for the United States. At age 21, he accepted a call to the large [[Knox Presbyterian Church (Hamilton)|Knox Presbyterian Church]] (closed in 1971) in nearby [[Hamilton, Ontario]].

In December 1873, at age 30, Simpson left Canada and assumed the pulpit of the largest Presbyterian church in [[Louisville, Kentucky]], the [[Chestnut Street Presbyterian Church]]. It was in Louisville that he first conceived of preaching the gospel to the common man by building a simple [[Tabernacle (Methodist)|tabernacle]] for that purpose. Despite his success at the Chestnut Street Church, Simpson was frustrated by their reluctance to embrace this burden for wider evangelistic endeavor.

In 1880, Simpson was called to the [[Thirteenth Street Presbyterian Church]] in New York City where he immediately began reaching out to the world with the gospel. In August 1881, he experienced [[divine healing]] of a heart problem.<ref>J. Gordon Melton, ''Encyclopedia of Protestantism'', Infobase Publishing, USA, 2005, p. 497</ref> In October 1881, he adopted the vision of [[believer's baptism]] as a symbol of commitment and was baptized by immersion in a [[Baptist church]].<ref>Daryn Henry, ''A.B. Simpson and the Making of Modern Evangelicalism'', McGill-Queen's Press - MQUP, Canada, 2019, p. 158-159</ref> After discussing his change in beliefs at his church, he decided to leave it.