Ekkehardt Mueller received his formal training in Germany and at Andrews University graduating with a Doctor of Ministry and a Doctor of Theology degree. Before joining the Biblical Research Institute of the General Conference he worked as a pastor and as a ministerial secretary for more than two decades. Currently he is heavily involved in writing articles and presenting lectures in different parts of the world.

Ekkehardt loves gardening and painting. Good music is also an important element in the home of Ekkehardt and his wife Geri, a music teacher. Groups of musicians meet there regularly, and when their sons Eike and Enno are home from university and college the quartet can play again.