Theology is the study of religious belief from a religious perspective. More narrowly it is the study of the nature of the divine. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the supernatural, but also deals with religious epistemology, asks and seeks to answer the question of revelation. Revelation pertains to the acceptance of God, gods, or deities, as not only transcendent or above the natural world, but also willing and able to interact with the natural world and to reveal themselves to humankind.

இறையியல் (Theology) என்னும் சொல் இறைவன் (கடவுள்) தொடர்பான ஆய்வு என்னும் பொருள்கொண்டது. அதைவிடவும் விரிவான பொருளில் சமய நம்பிக்கை, சமய ஒழுக்கம், ஆன்மீகம் சார்ந்த ஆய்வு எனவும் அதை விளக்கலாம்.