The Doctrine of the Trinity

The doctrine of the Trinity. The most important doctrine in all of special revelation (the Bible).

The doctrine of the Trinity is the nucleus of the whole Christian religion. We cannot get it wrong. It’s important for every single Christian to understand this doctrine, because TO BE Christian is to believe in the Triune God. God has revealed Himself to us in scripture as Triune, so to deny the Triunity of God is to deny the God of the Bible. The God who created the Universe and all that is in it. The God of Abraham, Isaac, and Israel. The God who sent the flood in (Genesis 7). The God who spoke to the Israelites on the mountain in (Exodus 19-20) and gave them the law. This One God who is spoken of throughout redemptive history in the pages of scripture, exists in Trinity.

"to be Christian is to believe in the Triune God."

So to start, I want to echo what the Universal Church has taught about this most essential doctrine for 2000 years. The Church in 325 AD came together at this historic council called the council of Nicaea, not to create the doctrine of the Trinity (the doctrine is rooted in scripture and is reality from all eternity past), but to come up with the orthodox (accepted universally) language of how we explain and teach of the Triunity of God. They came up with a creed called the Nicene Creed and it is authoritative in the life of the Universal Christian Church.

The first line of the creed says this, “We believe in one God”. Contrary to the critique of many people, Trinitarianism is the belief in one God. Trinitarians wholeheartedly believe what the Jews did: “Hear, O Israel: The Lord our God, the Lord is one.” (‭‭Deuteronomy‬ ‭6:4‬)

True Trinitarians defend and confess the oneness of God. Trinitarians are monotheist. We do not believe in three gods, but ONE God. But the creed goes on to confess that not only is the Father God, but the Son, Jesus Christ, is also God, and the Holy Spirit is also God. Why is that? Because the doctrine of the Trinity teaches that God is one BEING eternally existing in three co-equal, co-eternal, PERSONS. There is ONE divine essence. The three persons share in that one essence, hence why all three of them are equally divine. Equally God, and equally eternal. Triune. 3 in 1.

"True Trinitarians defend and confess the oneness of God."

Though each member of the Trinity shares in the same essence/substance or nature, they are each DISTINCT PERSONS. God doesn’t have “forms” or “parts”. The Father, Son, and Spirit are not each 1/3 of God (partialism, a damnable heresy), or a form of God (modalism, another damnable heresy).

They each are truly/fully God because of the ONE simple essence that they each share. But they are distinct in personhood. As the Athanasian Creed says (another Creed of the universal Church), “neither confounding the Persons”. Each member of the Trinity are not each other. We do not mix up the persons. The Father isn’t the Son, the Son isn’t the the Spirit, The Spirit isn't The Father, etc.

They are each their own distinct PERSON, though they are ONE in essence or substance. Hence why the Athanasian creed also says,

“nor dividing the substance”.

This is what distinguishes each Person: the Father is unbegotten, the Son is “begotten from the Fathers Essence before all ages” (Nicene Creed), and the Holy Spirit eternally proceeds from the essence of the Father and the Son.

This is why we can say the Son and the Spirit are God: because they eternally originate from the same divine essence as the Father. This alone distinguishes the persons. Unbegotten Father, eternally generated (begotten) Son, Eternally Spirated (breathed out) Spirit. The theological term for what distinguishes the persons, what I just explained, is the eternal relations of origin. Where the three persons originate from, NOT in a temporal sense, but from ALL ETERNITY PAST.

There is so much more that I could expound on, but since this is only meant to be an introduction to the doctrine of the Trinity, I will stop here, as I do not want to confuse you with so much information on this great and most essential doctrine.

"I pray that this blessed you and helps you to fall more in love with the Triunity of God. May the One who exists in Three bless you."


My name is Samuel Jaboin and I’m a young preacher who’s dedicated to teaching rich theological doctrine and helping Christians find rest in Christ through understanding these rich doctrines.

His motto is this: “Orthodoxy precedes orthopraxy”. Which means that he’s passionate about being very practical in his preaching but the basis of these practical truths that he preaches is these rich theological topics.


Samuel Jaboin / @samueljaboinministries

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