THE DOCTRINE OF THE TRINITY is unique to Christianity. No other faith, religion, sect, or philosophy advocating one God also proclaims that there are three who are God. This apparent paradox does not mean that there are ‘three gods in one,’ but that one God exists as three distinct persons who are coequal, coinfinite, and coeternal, all possessing the same essential nature (John 10:30). Each member of the Godhead—God the Father, God the Son, and God the Holy Spirit—is therefore a separate person, individually possessing identical, eternal attributes (Matt. 28:19). God is one in essence, but three in persons.

    Each person of the Godhead has a specific purpose related to the eternal will and plan of God. The Scriptures ascribe distinct roles to each Person that are not jointly shared by the other members of the Trinity. The Father is the author and planner, the source of all things. The Son is the agent through whom the Father’s plan is enacted. The Holy Spirit is the revealer and empowers the plan in our lives.

    Trinitarian tenets are not abstract theology. There are practical and essential reasons for every believer in Jesus Christ to fully comprehend this doctrine. Your view of the Trinity determines your understanding of Christology, the person and work of Jesus Christ. Your view of the Holy Spirit affects your concept of living the Christian life. Your worship and spiritual life are possible only with the biblical perspective of the Godhead. In short, if you are to love God and grow spiritually, you must understand the doctrine of the Trinity.

    You may wonder how one God can exist in three persons; yet from Scripture you can know that He so exists! All that God has made known about Himself can be understood (Rom. 1:19-20), even the fact that He is singular in one sense and plural in another. Though your finite mind cannot comprehend the infinite, through the ministry of the Holy Spirit who reveals the Scriptures, you can understand and accept spiritual truth by means of faith (1 Cor. 2:10-12).

    Man possesses three systems of human perception: rationalism, empiricism, and faith. Nothing is known that is not learned through one or a combination of these three systems. Rationalism relies on human ability to reason in order to establish the criterion for reality apart from the authority of divine revelation. Empiricism establishes reality based on observation and experience of the senses independently of scriptural revelation. Empiricism is based on the ability to see, hear, smell, taste, or touch. The third system, faith, is the only nonmeritorious system of perception. Faith establishes a criterion for reality based on the authority and veracity of God and His revelation rather than any human ability. Only by means of faith can man comprehend the infinite spiritual truths, which are beyond human finite reasoning powers or the sensory systems (2 Cor. 5:7; Heb. 11:1).

THE BIBLICAL CONFIRMATION

    The word “Trinity” is not found in the Scripture, but the concept is biblical. Rarely does a single passage of Scripture delineate point-by-point a complex doctrine. Rather, theologians formulate the principles of any major doctrine by comparing and correlating all related biblical passages. The believer should accept a doctrinal truth derived from many passages of Scripture just as he would accept a biblical principle directly stated in a single context. Over the years, the doctrine of the Trinity was likewise formulated by combining all passages related to God the Father, God the Son, and God the Holy Spirit.

   Historically, the formal doctrine of the Trinity derives from a succession of early church controversies and councils that sought to explain the biblical testimony regarding:

The councils were held in response to heresies such as monarchianism and Arianism1. The Council of Nicaea (A.D. 325) confirmed that God the Son possessed the same nature as God the Father. The Council of Constantinople (A.D. 381) confirmed the deity of the Holy Spirit. In the following centuries, ‘Trinity’ became a technical word for the three persons of the Godhead.

    The concept of the Trinity is firmly established in both the Old and the New Testaments.2

    The Hebrew word for God, אֱלֹהִם (Elohim) is plural and indicates the existence of more than one person in the Godhead. When Genesis 1:1 declares “Elohim created the heavens and the earth,” the plural asserts that all three persons had a part in creation: The Father conceived the plan; the Son accomplished creation (John 1:1-3; Col. 1:16; Heb. 1:2); and the Holy Spirit restored creation (Gen. 1:2) after Satan’s fall from heaven.3

    Further Old Testament passages clearly declare the plurality of the Godhead.

“Come [Israel] near to Me, listen to this:

From the first I have not spoken in secret,

From the time it took place, I was there.

And now the Lord GOD [יהוה, JHWH, “the Father”] has sent Me, and His Spirit.” (Isa. 48:16)4

Generally, the Old Testament uses the word יהוה (JHWH) to refer to only one member of the Trinity. JHWH is the doubling of the verb “to be,” meaning “absolute existence.” Called the Tetragrammaton, or “four letters,” JHWH is the proper name for God or Lord. JHWH is considered sacred and never pronounced by devout Jews. We translate JHWH as Jehovah or Yahweh.

    The context of a passage of Scripture indicates which member of the Trinity the Tetragrammaton describes. In Isaiah 64:8, Yahweh refers to God the Father and in Isaiah 11:2, to God the Holy Spirit. Most uses of Yahweh, however, refer to God the Son since He is the visible person of the Trinity (John 6:46; cf. John 14:9-10; Isa. 6; cf. John 12:39-41). Numerous passages in the Old Testament document the preincarnate appearances—theophanies—of Yahweh or the Lord Jesus Christ to man (Gen. 16:7-13; 18:1-33; 32:24-32; Ex. 3:2; cf. Acts 7:30-35; Ex. 13:21; 14:19; 23:20-23; 24:9-11; 32:34; 33:2; Num. 20:16; Judg. 2:1-4; 6:11-24; Isa. 63:9; Hosea 12:4).

    Occasionally, Yahweh implies all three persons as in the general blessing:

“The LORD [Yahweh] bless you, and keep you;

The LORD make His face shine on you,

And be gracious to you;

The LORD lift up His countenance on you,

And give you peace.” (Num. 6:24-26)

    Other Old Testament references to the Trinity include the pronoun “Us” where God refers to Himself in the plural (Gen. 3:22; 11:7; Isa. 6:8).

Then God [Elohim] said, “Let Us make man in Our image. . . .” And God created man in His own image, in the image of God He created him. (Gen. 1:26a, 27a, italics added)

Such biblically recorded ‘convocations’ among the members of the Trinity serve to verify the existence of the threefold personality of God.

    While these heavenly convocations among the members of the Godhead suggest a decision-making process, they do not imply that God is indecisive. God knows all that is knowable and His mandates come from His infinite and eternal knowledge. He then communicates to us, describing His seemingly indescribable person and plan in terms of our human experience and in a form of expression we can understand. His language accommodates our limited ability to comprehend the infinite. Thus, we can understand God, what He has revealed about Himself, and what He has set forth in His divine decree.5

THE ESSENCE OF THE TRINITY

    While our present study emphasizes God as a triune being, understanding His person is essential. Immediately we face a problem; we need a specialized vocabulary. Each term must convey the exact meaning of each divine characteristic. Once mastered, this vocabulary will save thousands of words of explanation and lay the foundation for further categories of Bible doctrine.

    Before we can grasp the concept of the Trinity, we must first comprehend the oneness or unity of the Godhead. The unity of the Trinity is defined as the three persons having one divine essence (Isa. 48:16; Matt. 28:19; John 10:30; 2 Cor. 13:14; Gal. 3:20b; James 2:19a). Essence is the essential being or nature of a person, what that person is. Each member of the Godhead is a joint partaker of the same essence, the same majesty, and the same eternal glory.

    Attributes are those intrinsic qualities which compose the essence of a person. Each person of the Godhead has identical and identifiable attributes. These divine attributes never change. Neither can they separate from divine essence as a whole. All divine attributes are of equal value. No one attribute overrides another; all work in complete coordination without any compromise to His essence. Only through knowledge of His attributes can God’s essence be known.