The most important aspect of modern physics is the study of the unchanging order between measured quantities, such as that described by Newton’s law of gravity or Ampere’s law. This aspect makes physics useful, as the lawsof physics are applied to develop a variety of technical devices and machines, being a crucial foundation of technical civilization. Additionally, this aspect reveals certain truthsabout the world, as accurate predictions calculated from these laws testify to their validity. Furthermore, when new experiments force a physical law to be modified, the description of relations between quantities is almost never refuted and becomes a special case of the new, more general theory, showing an incremental progress of knowledge. How has this most critical part of physics originated? The source of it is theology, which produced core methodological principles that underpin this approach: The world is comprehensible and ordered according to universal, unchanging relations between measured quantities. The world is contingent, and any metaphysical possibility we conceive is possible, if only in agreement with experience. The highest goal of the rational mind is the pursuit and contemplation of truth. These principles were essential to the development of modern physics. The success of this project provides evidence in favor of Christian Revelation, by means of heuristic power - prediction of essential knowledge that could not be obtained in any other way.