Trinitarian scholar Alexander Hislop asserts that- the Babylonians worshiped one God in three persons and used the equilateral triangle as a symbol of this trinity. In his book, Hislop shows pictures used in ancient Assyria and in Siberia to represent triune divinities. He also finds trinitarian ideas in the Babylonian cult of the father, mother, and child, saying that the Babylonian trinity was "the Eternal Father, the Spirit of God incarnate in a human mother, and a Divine Son, the fruit of that incarnation."
Historian Will Durant describes the trinity in ancient Egypt. "Ra, Amon, and another god, Ptah, were combined as three embodiments or aspects of one supreme and triune deity." Egypt also had a divine trinity of father, mother, and son in Osiris, Isis, and Horus.
Trinities exist in other important pagan religions such as Hinduism, Buddhism, and Taoism. Hinduism has had a supreme trinity from ancient times: Brahma the Creator, Shiva the Destroyer, and Vishnu the Preserver. One scholar described the belief: "Brahman-Atman, the impersonal ultimate reality achieves a religiously significant threefold manifestation or trimurti [triad of gods] through the three personal deities who represent the divine functions of creation, destruction, and preservation respectively." This trinity is sometimes represented by a statue of one god with three heads.
Buddhism also has a trinity of sorts. The Mahayana (northern) school of Buddhism has the doctrine of a "triple body" or Trikaya. According to this belief there are three "bodies" of the Buddha-reality. The first is the eternal, cosmical reality, the second is the heavenly manifestation of the first, and the third is the earthly manifestation of the second. Furthermore, many Buddhists worship three-headed statues of Buddha.
Taoism, the ancient mystical religion of China, has an official trinity of supreme gods- the Jade Emperor, Lao Tzu, and Ling Pao- called the Three Purities.
A philosophic trinity appears in Plato and becomes very significant in Neo-Platonism. Of course, Greek philosophy, particularly Platonic and Neo-Platonic thought, had a major influence on the theology of the ancient church. For example, the trinitarian Logos doctrine stems from the Neo-Platonic philosopher Philo.Thus, we can see that the idea of a trinity did not originate with Christendom. It was a significant feature of pagan religions and philosophies before the Christian era, and its existence today in various forms suggests an ancient, pagan origin.
__________________ And then shall many be offended, and shall betray one another, and shall hate one another.