A son of a Presbyterian minister, Gill Robb Wilson followed in his father's footsteps after the Great War. He attended seminary in Pittsburgh and was ordained into a forerunner of the current Presbyterian Church, (USA). During his upbringing and training for the ministry, Gill Robb acquired an accomplished skill with the spoken and written word. This training would serve him well in later years. He was installed as Pastor of the Fourth Presbyterian Church of Trenton, New Jersey. During this pastorate (in 1927), Gill Robb Wilson was named Chaplain of the American Legion. After the death of his first wife and second child, he suffered the loss of his voice. Doctors required complete silence if his voice was to have the chance of ever coming back. It was at this point that he left the leadership of the Fourth Presbyterian Church of Trenton where he had enjoyed a fruitful ministry.
