Trinity

This name is composed of two Latin elements: “trīnus” (triple), plus “ūnitās,” from “ūnus” (one) plus ‎ “-itās,” meaning (unity). In turn, the name means “trinity, the number three, a triad.” The Trinity’s Christian doctrine defines God as three divine persons or hypostases: the Father, the Son (Jesus), and the Holy Spirit; “one God in three persons.” The three persons are distinct yet are one “substance, essence or nature.” The Trinity is considered to be a mystery of the Christian faith. According to this doctrine, there is only one God in three persons. Each person is God, whole and entire. They are distinct from one another in their relations of origin: as the Fourth Lateran Council declared, “it is the Father who generates, the Son who is begotten, and the Holy Spirit who proceeds.”