From 1930 till 1939, Weatherhead was a member of Dr Frank Buchman's Oxford Group and wrote several books reflecting the group's values, including Discipleship and The Will of God.
He married Anne Howard, daughter of Peter Howard, in 1962 and became involved through Howard in Frank Buchman's Moral Re-Armament (MRA) movement, which attracted much negative comment.
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On the 1931–32 Springbok tour of the UK and Ireland, he came into contact with Frank Buchman's Oxford Group and decided to give up rugby to be a part of the Moral Re-Armament, although he still coached on occasion.
The primary source for the steps was a religious movement popularized by Frank Buchman, with elements of the Higher Life movement tradition combined with the personal-evangelism techniques developed within the YMCA movement in the early 20th century.
These principles are taken from those of the organization's predecessor, Moral Re-Armament (MRA), founded in 1938 by Frank Buchman.
Crothers' play was reportedly inspired by a real-life religious movement of the day, Dr. Frank Buchman's Oxford Group of the 1930s.