what is the holy trinity christianity

Answered from the commentary of A. J. Pollock, Concise Bible Dictionary, W. W. Fereday and 4 others

The Holy Trinity is the one God, eternally existing as the Father, the Son, and the Holy Spirit: three distinct Persons, each God, yet not three Gods but one God, undivided and indivisible. The Persons are not three aspects or names of one Person; the Father sends the Son, and the Holy Spirit is distinct from both. They are co-equal in deity and act in perfect unity, sharing one nature, will, and purpose. This is a mystery beyond human understanding, received in faith.

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What the commentators say

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A. J. PollockThe Holy Trinity

Our title at the head of this paper is one such. Yet there is abundance of teaching in the Holy Scriptures that God reveals Himself as Father, Son and Holy Spirit, not three Gods, but a Triune God, though Scripture teaches that the Father is God, the Son is God, the Holy Spirit is God, yet one God indivisible.

A. J. PollockDivine Titles and their Significance

Here in this very majestic declaration of the Oneness of the Godhead, care is taken to state it consistently with the truth afterwards revealed concerning the Three Persons of the Godhead—Father, Son and Spirit. These Three Persons, of one Substance, completely united in thought, will, purpose, counsel, are not three Gods, but One God, not a tritheism, but a Holy Trinity. We cannot understand the mystery of all this, but this truth lies at the very foundation of the Christian faith.

H. J. Vine“Honour the Son”

We are speaking of our Lord Jesus Christ as “the Son,” and not of His distinctive glories as “the Son of David,” “the Son of Man” and “the Son of God,” nor even of Him as “the Son of the Father,” but rather of His deity as God the Son. The Father is God, the Son is God, and the Holy Spirit is God; yet there are not three Gods, but one God, “God is one” (Gal. 3:20; 1 Tim. 2:5, N.Tr.). Baptism is to the name of the Father and of the Son and of the Holy Spirit,” we are told in Matthew 28:19. This indicates for us the trinity of Persons in the Godhead, all of whom share in that supreme glory.

A. J. PollockThe Holy Spirit of God

So we must be careful in using the terms, first, second and third Persons in the Trinity, not to think there is any difference in importance. The Father is God; the Son is God; the Spirit is God—the Spirit equal in nature and substance to the Father and the Son. If the three Persons of the Godhead are each of them God, it does not follow that there are three Gods. That were impossible. There can be only one God, supreme and unique. Orthodox Christendom believes in three Persons in the Godhead, yet one God, indivisible and unique—the three Persons in the Godhead with one will, one purpose, each sharing to the full every thought and desire and purpose in the minds of the others. We may not, nay cannot, comprehend this. It is a mystery hidden in the Godhead, yet the Godhead is pleased to reveal Itself as Father, Son, and Holy Spirit.

Michael HardtThe Lord Jesus Christ - His Person

There are three divine persons: the Father, the Son and the Holy Spirit. Each of them is ‘God’.

For the Son, see questions 2 and 3. For the Father, there are so many references to Him as the ‘God and Father’ (e.g. Eph. 1:3). The Spirit is eternal (Heb. 9:14), omnipresent (Ps. 139:7) and co-equal (‘on the same level with’) the Father and the Son (Mt. 18:19; 2 Cor. 13:13; Rev.1:4).

W. W. FeredayThe Holy Spirit

Scripture is most plain, whatever unbelief may say, that there are three distinct persons in the Godhead, equal in power, majesty, and glory, each taking His own part in all that is done, whether in creation or redemption, yet ever acting in perfect unity and communion.

VariousVarious

The truth as to the Deity is not that there are Gods—three supreme and omnipotent Beings, each having His own life and acting from Himself—but three in one—Father, Son and Holy Spirit—One God; and though for the sake of accommodation we use the word Person, and speak of three Persons in the Godhead, yet there are not three Persons as we understand persons. Such as Abraham, Isaac, and Jacob were three persons; each having his own separate life.

A. J. PollockThe Holy Trinity

In human language when we speak of a person, we think of separate entity, separate existence, separate will, different characteristics, thoughts and plans peculiar to each person, not shared with any others. Carry that human thought into the subject before us, and the truth of the Trinity is entirely perverted and lost. Instead of the Trinity—Father, Son and Spirit, ONE God—we should have three Gods, an absolute impossibility, for there can only be one God, unique and incomprehensible.

A. J. PollockBible Testimony to the Son of God

This clearly shows that whilst Scripture affirms that there are three distinct Persons in the Godhead, yet there are not three Gods, but one; not a trinity of Gods, but a triune God.

Verses

  • Matthew 28:19Go [therefore] and make disciples of all the nations, baptising them to the name of the Father, and of the Son, and of the Holy Spirit;
  • 2 Corinthians 13:13All the saints salute you.
  • 1 Peter 1:2elect according to [the] foreknowledge of God [the] Father, by sanctification of [the] Spirit, unto [the] obedience and sprinkling of [the] blood of Jesus Christ Grace to you and peace be multiplied.
  • John 14:16–1716And I will beg the Father, and he will give you another Comforter, that he may be with you for ever, 17the Spirit of truth, whom the world cannot receive, because it does not see him nor know him; but ye know him, for he abides with you, and shall be in you.
  • John 14:26but the Comforter, the Holy Spirit, whom the Father will send in my name, he shall teach you all things, and will bring to your remembrance all the things which I have said to you.
  • John 15:26But when the Comforter is come, whom I will send to you from the Father, the Spirit of truth who goes forth from with the Father, he shall bear witness concerning me;
  • John 16:13–1513But when he is come, the Spirit of truth, he shall guide you into all the truth for he shall not speak from himself; but whatsoever he shall hear he shall speak; and he will announce to you what is coming. 14He shall glorify me, for he shall receive of mine and shall announce [it] to you. 15All things that the Father has are mine; on account of this I have said that he receives of mine and shall announce [it] to you.