Berg was born on February 18, 1919 in Oakland, California. He was the youngest of three children of Hjalmer Emmanuel Berg and Rev. Virginia Lee Brandt, both parents were Christian evangelists. His father was Swedish. David Berg's mother Virginia Brandt Berg, is the individual whom he credited for influencing him the most. Although raised in a Christian home, Virginia became an atheist and wild society girl during her college years. However, shortly after the birth of her first child, she broke her back in an accident and spent the next five years as a bedridden invalid, often hovering near death. Eventually she recovered and spent the rest of her life with her husband, Hjalmer, in active Christian service as a pastor and evangelist. Virginia and Hjalmer were no strangers to controversy. They were expelled from the Disciples of Christ after publicly testifying of her "divine healing", which was contrary to church doctrine. They subsequently joined a new denomination, the Christian and Missionary Alliance, shortly before David Berg's birth. In later years, their missionary zeal and disdain for denominational politicking often set them at variance with the conservative faction of that church's hierarchy, causing them to work largely as independent pastors and evangelists.