Brethren, today we contemplate the mystery of Unity and Trinity of the One God. We can arrive at the knowledge of the existence of One God from natural reason, and attain the certainty through faith.
That there is one God we know from Scripture:
Hear, O Israel: The Lord our God, the Lord is one. (Deuteronomy 6:4)
We also know from Scripture that God is Father:
9This, then, is how you should pray:
Our Father in heaven, hallowed be your name, 10your kingdom come, your will be done on earth as it is in heaven. 11Give us today our daily bread. 12Forgive us our debts, as we also have forgiven our debtors. 13And lead us not into temptation, but deliver us from the evil one. (Matthew 6: 9-13)
From the Scripture we also learn that the Word of God, who took flesh in the person of Jesus Messiah is God:
In the beginning was the Word, and the Word was with God, and the Word was God. (John 1:1)
Scripture reveals the deity of the Holy Spirit:
3Then Peter said, “Ananias, how is it that Satan has so filled your heart that you have lied to the Holy Spirit and have kept for yourself some of the money you received for the land? 4Didn’t it belong to you before it was sold? And after it was sold, wasn’t the money at your disposal? What made you think of doing such a thing? You have not lied to men but to God.” (Acts 5: 3-4)
And yet, the first Scripture we started with remains eternally valid and binding:
Hear, O Israel: The Lord our God, the Lord is one. (Deuteronomy 6:4)
The Father, the Son, and the + Holy Spirit share the same divine Name:
19Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.” (Matthew 28:19-20)
The same revealed to Moses as the unique name of the one God of Israel:
13Moses said to God, “Suppose I go to the Israelites and say to them, ‘The God of your fathers has sent me to you,’ and they ask me, ‘What is his name?’ Then what shall I tell them?” 14God said to Moses, “I am who I am.b This is what you are to say to the Israelites: ‘I am has sent me to you.’”
15God also said to Moses, “Say to the Israelites, ‘The Lord, the God of your fathers—the God of Abraham, the God of Isaac and the God of Jacob—has sent me to you.’ This is my name forever, the name by which I am to be remembered from generation to generation. (Exodus 3”13-15)
This divine sharing of Three Persons in one single Divine Essence is what we call the Holy Trinity, whom we celebrate specially today but whom Christians who respect the Bible and who reverently receive this teaching from our Christians ancestors, address in prayer and worship every day.
Outside of this faith in the Triune God, except by special dispensation of God who condescends to our not-guilty ignorance (He is Love, after all [1 John 4:8]), no one can be saved.
And no one can be saved without this faith because in the Consuming Fire that the Triune God is we find the Eternal Love, of Love Loving and Being Loved in return, who alone can satisfy all our longings. It is to His vision that we were created for and salvation for us means this direct vision of God as He is, Father, Son, and + Holy Spirit.
May He indwell us and makes us sharers of the divine nature. (2 Peter 1:4)
