God

God, in the widest ecumenical sense of the term, is the Supreme Being — the ultimate reality believed by monotheistic and many transtheistic traditions to be the uncreated ground from which everything else derives its existence. In Abrahamic monotheism (Judaism, Christianity, Islam) God is a single, personal deity, omnipotent, omniscient and omnibenevolent. In classical Western theism God is also considered to be immutable and impassible: outside time, unchangeable, and not subject to the world's suffering. Perennialist and mystical traditions across cultures identify their own supreme principles — the Hindu Brahman, the Taoist Dao, the Buddhist Dharmakāya, the Kabbalistic Ein Sof — as pointing at the same ultimate reality under different names.

The experiential encounter with God is one of the most-reported categories in the mystical and religious literatures. From the unio mystica of Christian contemplatives to the fana of Sufi mystics to the satori of Zen practitioners, traditions across the world describe a phenomenologically similar event: the direct, unmediated recognition of a personal or transpersonal supreme presence, typically accompanied by ineffable love, radical clarity, and a felt certainty that this presence is the origin and end of all things. William James in The Varieties of Religious Experience (1902) catalogued the phenomenology as consistent across otherwise unrelated cultures.

In modern psychedelic experience God-encounters are one of the most-reported categories of high-dose experience — particularly on psilocybin (as documented in the Griffiths et al. 'God encounter' study, 2019), 5-MeO-DMT, and ayahuasca. Experiencers commonly describe them as more real than ordinary reality and — despite their frequency across atheists as well as believers — as leaving durable positive changes in mood, meaning-making, and relational orientation.

Sources:
Wikipedia — God
Wikipedia — Mystical experience