Thus, H.C. Hendrix, J.M. Wilson, Simon P. Miller , and other citizens contacted A. I. Myhr, an evangelist. Myhr held a revival in the Johnson County Courthouse in May 1908. As a result of this meeting, twenty-five people agreed to form a local church. On August 6, 1908 the trustees of the newly organized church bought a lot on Main Street on which to construct a church building.
Although construction of the building began in 1909, meetings were still held in the courthouse monthly. Members began to solicit funds for the building and by June 1912 construction was completed and the church building dedicated. An organ was placed in the church as well as a baptistry. Sunday School was established as part of church services and the Ladies Aid Missionary Society was formed. In supporting instrumental music and missionary societies, First Christian had positioned itself in the main body of the Disciples of Christ.
After the movement from the courthouse to the newly constructed building, a series of ministers of whom little is known served at First Christian. Apparently most of these early ministers came from Johnson City or Elizabethton. Church membership slowly increased to forty-seven.
On May 15, 1941, the trustees of the church purchased a lot adjoining the church in order to build a parsonage. Two couples, however, lived on the property, so the construction of the parsonage was postponed until accommodations were found for these couples. With the completion of the parsonage in 1942, First Christian would subsequently have "full-time" ministers, which contributed to the growth and direction of the church.
From 1942-1964, the membership of First Christian rose from one hundred to two hundred and fifty, mainly because of the efforts of minister H. T. Mabry. Mabry initiated youth programs, successfully encouraged more support of missionaries, stressed the need for support of "centrist" Bible colleges, and urged the local board to adopt a plan whereby the congregation would select elders and deacons.