Hindu texts Vedas: the Rigveda, the Yajurveda, the Samaveda and the Atharvaveda. Each Veda has been subclassified into four major text types – the Samhitas (mantras and benedictions), the Aranyakas (text on rituals, ceremonies, sacrifices and symbolic-sacrifices), the Brahmanas (commentaries on rituals, ceremonies and sacrifices), and the Upanishads (text discussing meditation, philosophy and spiritual knowledge). The Upanishads are a collection of Hindu texts which contain some of the central philosophical concepts of Hinduism. The Upanishads are commonly referred to as "Vedānta", variously interpreted to mean either the "last chapters, parts of the Veda" or "the object, the highest purpose of the Veda".
Ancient Mesopotamian religion complex and difficult subject because, by nature, their religion was governed only by usage, not by any official decision, and by nature it was neither dogmatic nor systematic. Deities, characters, and their actions within myths changed in character and importance over time, and occasionally depicted different, sometimes even contrasting images or concepts. This is further complicated by the fact that scholars are not entirely certain what role religious texts played in the Mesopotamian world. For many decades, some scholars of the Ancient Near East argued that it was impossible to define there as being a singular Mesopotamian religion, with Leo