Martin Luther (2007). “Through the Year with Martin Luther: A Selection of Sermons Celebrating the Feasts and Seasons of the Christian Year”, p.412, Hendrickson Publishers
George Whitefield (1771). “The Works of the Reverend George Whitefield, M.A...: Containing All His Sermons and Tracts which Have Been Already Published: with a Select Collection of Letters... Also, Some Other Pieces on Important Subjects, Never Before Printed; Prepared by Himself for the Press; to which is Prefixed, an Account of His Life, Compiled from His Orignial Papers and Letters”, p.47
William Gurnall (1669). “The Christian in Compleat Armour, Or, A Treatise of the Saints War Against the Devil: Wherein a Discovery is Made of that Grand Enemy of God and His People, in His Policies, Power, Seat of His Empire, Wickedness, and Chief Design He Hath Against the Saints ...”, p.270