Triple deity in the context of "Irish mythology"

Most Christian denominations believe the Holy Spirit, or Holy Ghost, to be the third divine Person of the Trinity, a triune god manifested as God the Father, God the Son, and God the Holy Spirit, each being God. Nontrinitarian Christians, who reject the doctrine of the Trinity, differ significantly from mainstream Christianity in their beliefs about the Holy Spirit. In Christian theology, pneumatology is the study of the Holy Spirit. Due to Christianity's historical relationship with Judaism, theologians often identify the Holy Spirit with the concept of the Ruach Hakodesh in Jewish scripture, on the theory that Jesus was expanding upon these Jewish concepts. Similar names, and ideas, include the Ruach Elohim (Spirit of God), Ruach YHWH (Spirit of Yahweh), and the Ruach Hakodesh (Holy Spirit). In the New Testament the Holy Spirit is identified with the Spirit of Christ, the Spirit of Truth, and the Paraclete (helper).

The New Testament details a close relationship between the Holy Spirit and Jesus during his earthly life and ministry. The Gospels of Matthew and Luke and the Nicene Creed state that Jesus was "conceived by the Holy Spirit, born of the Virgin Mary". The Holy Spirit descended on Jesus like a dove during his baptism, and in his Farewell Discourse after the Last Supper, Jesus promised to send the Holy Spirit to his disciples after his departure.

Diana is a goddess in Roman religion, primarily considered a patroness of the countryside and nature, hunters, wildlife, childbirth, crossroads, the night, and the Moon. She is equated with the Greek goddess Artemis, and absorbed much of Artemis' mythology early in Roman history, including a birth on the island of Delos to parents Jupiter and Latona, and a twin brother, Apollo, though she had an independent origin in Italy.

Diana is revered in modern neopagan religions including Roman neopaganism, Stregheria, and Wicca. In the ancient, medieval, and modern periods, Diana has been considered a triple deity, merged with a goddess of the moon (Luna/Selene) and the underworld (usually Hecate).

Vishnu (/ˈvɪʃnuː/; Sanskrit: विष्णु, lit. 'All Pervasive', IAST: Viṣṇu, pronounced [ʋɪʂɳʊ]), also known as Narayana and Hari, is one of the principal deities of Hinduism. He is the Supreme Being within Vaishnavism, one of the major traditions within contemporary Hinduism, and the god of preservation (sattva).

Vishnu is known as The Preserver within the Trimurti, the triple deity of supreme divinity that includes Brahma and Shiva. In Vaishnavism, Vishnu is the supreme Lord who creates, protects, and transforms the universe. Tridevi is stated to be the energy and creative power (Shakti) of each, with Lakshmi being the equal complementary partner of Vishnu. He is one of the five equivalent deities in Panchayatana puja of the Smarta tradition of Hinduism.

Ancient Celtic religion, commonly known as Celtic paganism, was the religion of the ancient Celtic peoples of Europe. Because there are no extant native records of their beliefs, evidence about their religion is gleaned from archaeology, Greco-Roman accounts (some of them hostile and probably not well-informed), and literature from the early Christian period. Celtic paganism was one of a larger group of polytheistic Indo-European religions of Iron Age Europe.

While the specific deities worshipped varied by region and over time, underlying this were broad similarities in both deities and "a basic religious homogeneity" among the Celtic peoples. Widely worshipped Celtic gods included Lugus, Toutatis, Taranis, Cernunnos, Epona, Maponos, Belenos, and Sucellos. Sacred springs were often associated with Celtic healing deities. Triplicity is a common theme, with a number of deities seen as threefold, for example the Three Mothers.

Brahma (Sanskrit: ब्रह्मा, IAST: Brahmā) is a Hindu god, referred to as "the Creator" within the Trimurti, the trinity of supreme divinity that includes Vishnu and Shiva. He is associated with creation of everything, knowledge, and the Vedas. Brahma is prominently mentioned in creation legends. In some Puranas, he created himself in a golden embryo known as the Hiranyagarbha.

Brahma is frequently identified with the Vedic god Prajapati. During the post-Vedic period, Brahma was a prominent deity and his sect existed; however, by the 7th century, he had lost his significance. He was also overshadowed by other major deities like Vishnu, Shiva, and Mahadevi and demoted to the role of a secondary creator, who was created by the major deities.