From Textus Receptus
Christian theology is based largely upon the Canonical Gospels, letters and books of the New Testament and to a lesser degree the Old Testament, being a discourse concerning Christian logic. Christian theologians use Biblical exegesis, rational analysis, and argument to understand, explain, test, critique, defend or promote Christianity. Theology might be undertaken to help the theologian understand Christianity more truly, make comparisons between Christianity and other traditions, defend Christianity against critics, facilitate Christianity's reform, assist in the propagation of Christianity, draw on the resources of the Christian tradition to address some present situation or need.
Systematic theology is a discipline of Christian theology that attempts to formulate an orderly, rational, and coherent account of the Christian faith and beliefs. Systematic theology draws on the foundational sacred texts of Christianity, while simultaneously investigating the development of Christian doctrine over the course of history, particularly through philosophy, science and ethics. Inherent to a system of theological thought is that a method is developed, one which can be applied both broadly and particularly. Systematic theology will typically explore: God, the attributes of God, the Trinity, Revelation, Creation, Divine providence, Theodicy, Christology, Pneumatology, doctrine on humanity, Hamartiology, Soteriology, Ecclesiology, sacraments, Eschatology, Christian living, the afterlife, and statements on other religions.
Christian theology has permeated much of Western culture, especially in pre-modern Europe.