a myth about purusha a god of the vedic religion provided the basis for
Historical Vedic religion The historical Vedic religion (also known as Vedism, Brahmanism, Vedic Brahmanism, and ancient Hinduism[note 1]) was the religion of the Indo-Aryans of northern India during the Vedic period.[5] It is one of the historical elements from which modern Hinduism emerged, although significantly different from it.[note 2]
Monotheism Quasi-monotheistic claims of the existence of a universal deity date to the Late Bronze Age, with Akhenaten's Great Hymn to the Aten. A possible inclination towards monotheism emerged during the Vedic period[15] in Iron-Age South Asia. The Rigveda exhibits notions of monism of the Brahman, particularly in the comparatively late tenth book,[16] which is dated to the early Iron Age, e.g. in the Nasadiya sukta. Bonpa Dharma, perhaps from twentieth century BCE,[17] was the first recorded religion to declare that there is one God above all, whom it calls Sangpo Bumtri.[18] However, it does not encourage monotheistic worship of a Sangpo Bumtri or any god for salvation but rather it focuses on karma.