Oswald Chambers (2015). “Biblical Ethics / The Moral Foundations of Life / The Philosophy of Sin: Ethical Principles for the Christian Life”, p.207, Discovery House
John Flavel (1671). “The Fountain of Life Opened, Or, A Display of Christ in His Essential and Mediatorial Glory: Containing 42 Sermons on Various Texts ...”, p.13
Francis Asbury (1821). “The Journal of the Rev. Francis Asbury, Bishop of the Methodist Episcopal Church: From August 7, 1771, to December 7, 1815”, p.231