TRINITY - BRITANNICA
in Christian doctrine, the unity of Father, Son, and Holy Spirit as three persons in one Godhead. Neither the word Trinity nor the explicit doctrine appears in the New Testament, nor did Jesus and his followers intend to contradict the Shema in the Old Testament: “Hear, O Israel: The Lord our God is one Lord” (Deuteronomy 6:4). The earliest Christians, however, had to cope with the implicat..