A theology that holds that knowledge of God can be acquired by human reason without the aid of divine revelation WordNet 3.0 & Open English WordNet

Natural theology, once also termed physico-theology, is a type of theology that seeks to provide arguments for theological topics based on reason and the discoveries of science, the project of arguing for the existence of God on the basis of observed so-called natural facts, and through natural phenomena viewed as divine, or complexities of nature seen as evidence of a divine plan or Will of God, which includes nature itself. Wikipedia

Type of theology providing arguments for the existence of God based on reason and ordinary experience of nature Wikidata