His 1924 Bampton Lectures were published in 1927 under the title The Ideas of the Fall and of Original Sin, which continues to be an influential source for students of original sin to this day and was included in Ronald W. Hepburn's 1973 entry on the "Cosmic Fall" in the Dictionary of the History of Ideas. Williams argued for a "transcendental" or "pre-cosmic fall" that occurred in the "life-force" and "during an 'absolute' time" prior to the "differentiation of life into its present multiplicity of forms and the emergence of separate species."[3][4]
He served as the Lady Margaret's Professor of Divinity at Oxford, from 1927 until his death in April, 1943. Also in 1927, he became the Canon of Christ Church, Oxford. A collected edition of his works was published by Eric Waldram Kemp in 1954, entitled simply N. P. Williams. On the flap jacket of this edition, N. P. Williams was given this description:
The young cleric cocking a snook at dignitaries -- the powerful controversialist -- the brilliant, sometimes perhaps too brilliant theologian with his sesquipedalian eloquence -- beneath these and more essential than these was a good friend, a devoted husband and father, a true priest with pastoral zeal and wide charity. This was the man. The memoirs in this book, by his widow and former pupil, and yet more clearly Dr Williams' own addresses, show us this man. A shy, diffident person, not easy to live with but easy to love, and certainly worthy of being remembered and honoured for himself.
^Hepburn, Ronald W. (1973). "Cosmic Fall". In Wiener, Philip P. (ed.). Dictionary of the History of Ideas: Studies of Selected Pivotal Ideas: Volume 1. New York, New York: Charles Scribner's Sons. pp. 504–513.
^Williams, N. P. (1927). The Ideas of the Fall and of Original Sin: a Historical and Critical Study. London, UK: Longmans, Green and Co. p. xxxiv, 523-524.
^Burke's Family Index, ed. Hugh Montgomery-Massingberd, Burke's Peerage Ltd, 1976, p. 28
^Burke's Peerage, Baronetage and Knightage, 107th edition, vol. 3, ed. Charles Mosley, Burke's Peerage Ltd, 2003, p. 4182
^Who's Who, 90th edition, H. O. Addison et al, A. & C. Black, 1938, p. 3632