Dr. Harrison recommended the Rev. R. T. Andrews, Sr., D. D. pastor of Mt. Gilead Baptist Church Fort Worth, Texas.  The Rev. Andrews was extended a call and preached his first sermon as pastor of Mt. Zion on January 1, 1939.  The pastorate of Dr. Andrews lasted until 1984, a span of 45 years.  Dr. Andrews distinguished himself as a visionary leader, who served as president of the Indiana General Missionary Baptist Convention, a vice president of the National Baptist Convention, USA Inc. and a board member of the Progressive National Baptist Convention, Inc. (PNBC).

He led Mt. Zion to erect its present cathedral-style edifice, a day care center, a 108-bed geriatric center and 3 senior citizen apartment complexes (4 buildings).  He also led the church to organize its own federal credit uion.  The church also became known for its Christian Education, Youth Ministry and community involvement.  From his resting place, at Crown Hill Cemetery, can be seen Mt. Zion's tall steeple and the boulevard containing a section that bears his name in honor.

Following the death of Dr. Andrews in 1984, Mt. Zion continued under the leadership of associate ministers; the Rev. Robert King, the Rev. Urias Beverly and the Rev. Joseph H. Finnell.  They serverd faithfully until 1987.  In 1987, the Rev. Dr. T. DeWitt Smith, Jr. pastor of New Hope Baptist Church, Akron, Ohio, accepted the call to pastor Mt. Zion.  However, he later rescinded this acceptance of the call.