Sts. Basil and Gregory Nazianzen were instrumental in contributing to the definition of the Trinity. They preached, taught, debated, and worked strenuously to bring the faithful who had been misled into thinking Jesus was not God and the Holy Spirit was not God back to the truth. God is “one substance (ousia) in three persons (hypostases)”. What this means is that the Father is God, Jesus is God, and the Holy Spirit is God, three persons, one God. But they are three persons in relationship to each other: The Father is NOT the Son; the Son is NOT the Holy Spirit; and the Holy Spirit is NOT the Father. They are in relationship with each other in a divine dance of love unified in the godhead.
St. Basil, born in 330, first became a hermit, then later a monk, and eventually became Bishop of Caesarea in 370, dying in 379. Born in 329, St. Gregory Nazianzen, friend of St. Basil, is also called St. Gregory the Theologian for his advancement of the Trinity. He became a priest in 361, then Bishop of Sasima, and finally Bishop of Constantinople, dying in 390. Both men advanced the true faith through their teaching and holiness. They gave us a better understanding of the Trinity: Father, Son, and Holy Spirit. Amen!
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