By the mid-1950s, it was being broadcast somewhere in the world in any given minute,[3] and in 1954 the organization's first international Bible teaching ministry office opened in Canada.

By the time of Epp's retirement in 1981, the Back to the Bible program was syndicated as a daily 30-minute broadcast on more than 800 radio stations worldwide.

By the 1970s the organization had offices in Australia, Canada, Colombia, Costa Rica, Ecuador, England, France, India, Italy, Jamaica, Mexico, the Philippines, South Africa, Sri Lanka and Venezuela.

[6] Warren W. Wiersbe, former pastor of Moody Church in Chicago, Illinois, served as leader of the Lincoln-based ministry between 1984 and 1989.

Dr John Munro, senior pastor at Calvary Church in Charlotte, North Carolina, became the program's next Bible teacher and served from August 2013.