Dr. Jimmy Nelson and his wife Maggie served as missionaries in the country of Mexico from 1979 until 1990. Then he was the pastor of Green Acres Baptist Church in Stephenville, Texas for 3 years. At the end of 1993 the Lord allowed him to returned to mission work. From 1993 to 1996, he was on deputation to raise the monthly support needed for the mission field.

In 1996 the Lord opened the doors for him to work with Landmark Mission Projects (L.A.M.P.) as an International Missionary setting up video Bible Seminaries in countries around the world. The following year Jimmy and Maggie joined Landmark Baptist Church in Haltom City, TX and were sent out as missionaries. When Dr. Jack Green resigned in 2008 the church called Dr. Nelson as pastor. He became pastor of Landmark Baptist Church on June 1 2008.

He is presently Pastor of Landmark Baptist Church, President of the Landmark Baptist Theological Seminary, and still is the Director of Landmark Mission Projects. He is still heavily involved in missions work.

He and Maggie have three children, 10 grandchildren, and four great grandchildren.