Trinity [Lat., = threefoldness], fundamental doctrine in Christianity, by which God is considered as existing in three persons. While the doctrine is not explicitly taught in the New Testament, early Christian communities testified to a perception that Jesus was God in the flesh; the idea of the Trinity has been inferred from the Gospel of St. John. The developed doctrine of the Trinity purports that God exists in three coequal and coeternal elements—God the Father, God the Son, and God the Holy Spirit (see creed
See studies by L. Hodgson (1960) and A. W. Wainwright (1962); G. L. Prestige, God in Patristic Thought (repr. 1964); J. N. D. Kelly, Early Christian Doctrines (1977); E. Jüngel, God as the Mystery of the World (1983).
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