 Many of the theologians below are cited by Louis Berkhof's "Systematic Theology", Augustus H. Strong's "Systematic Theology", Jan Jacob van Oosterzee's "Christian Dogmatics", John Bickford Heard's "Tripartite Nature of Man", and Henri de Lubac's "History and Spirit".A form of trichotomy is also held in Latter Day Saint theology.In the Doctrine and Covenants, a revelation of Joseph Smith Jr. states