God’s own story of redemption begins with Himself. And that’s where we should begin when preaching the gospel.
That’s not to say an exhaustive discourse on the character and nature of God, or a full-orbed investigation of His infinite attributes, is a prerequisite to understanding and believing the gospel. Even our Spirit-illuminated minds cannot fathom God in His fullness; how much can we expect the mind still darkened by sin to comprehend?
However, we cannot accurately present the gospel without first dispelling the false and idolatrous ideas about God that dominate the world. People today blithely fashion a god out of nothing more than their sentimentality and spiritual preferences. But that popular exercise is as futile as trying to rewrite the law of gravity, or wish it away altogether. God is eternal (Isaiah 57:15) and unchanging (Malachi 3:6), and demands our reverence on His terms, not ours.
God presents and defines Himself in Scripture as the true and living God. He says, “I am the Lord and there is no other; besides Me there is no God” (Isaiah 45:5). Furthermore, God’s Word reveals that the one true God eternally exists as three distinct Persons.
The doctrine of the Trinity is impossible to fathom, but John MacArthur points out that Scripture is both clear and nonnegotiable on this subject:
Though the fullness of the Trinity is far beyond human comprehension, it is unquestionably how God has revealed Himself in Scripture—as one God eternally existing in three Persons. . . .
The Scriptures are clear that these three Persons together are one and only one God (Deuteronomy 6:4). John 10:30 and 33 explain that the Father and the Son are one. First Corinthians 3:16 shows that the Father and the Spirit are one. Romans 8:9 makes clear that the Son and the Spirit are one. And John 14:16, 18, and 23 demonstrate that the Father, Son, and Spirit are one. . . . In other words, the Bible makes it clear that God is one God (not three), but that the one God is a Trinity of Persons.  John MacArthur, The MacArthur New Testament Commentary: 1–3 John (Chicago: Moody Press, 2007) 162.
God must be presented as triune if He is to be proclaimed faithfully. Additionally, the Trinity takes on great importance in the realm of evangelism because all three Persons play distinct roles in the salvation of sinners. The Father elects (Ephesians 1:3–6); the Son redeems (Ephesians 1:7–12); and the Holy Spirit convicts (John 16:8), regenerates (Titus 3:5), and indwells believers (Ephesians 1:13–14).
Creator and Judge
The Bible introduces the triune God as the Creator of all things, including mankind (Genesis 1). As such, He rightfully claims ownership of His creation (Psalm 50:10–12) and demands worship from us, His creatures (Exodus 20:2–5; Matthew 4:10).
But fallen humanity rebelliously refuses to worship the Creator. The open communion that should exist between God and man is now blocked by a wall of divine hostility (Psalm 5:5). God’s just wrath toward sinners may be an unsavory subject for modern sensibilities, but it’s a necessary truth to awaken the spiritual complacency of our age.
While the character and nature of God is an inexhaustible subject, the evangelist must labor to instill some sense of God’s supremacy and sovereignty in the hearts of sinners. He must explain why they should tremble at the thought of their future day in God’s courtroom (Hebrews 9:27)! John MacArthur laments the modern evangelistic trends that do just the opposite:
“The fear of the Lord is the beginning of wisdom” (Psalm 111:10). Much of contemporary evangelism aims to arouse anything but fear of God in the mind of sinners. For example, “God loves you and has a wonderful plan for your life,” is the opening line of the typical evangelistic appeal today. This kind of evangelism is far from the image of a God who must be feared. The remedy for such thinking is the biblical truth of God’s holiness.  John MacArthur, The John MacArthur Pastor’s Library: Evangelism (Nashville, TN: Thomas Nelson, 2011) 153–54.
Scripture ascribes its strongest superlative when it refers to God as “holy, holy, holy” (Isaiah 6:3; Revelation 4:8). Paul Washer points out that God’s holiness “is not merely one attribute among many but is the very context in which all other divine attributes must be defined and understood.”  Paul Washer, The Gospel’s Power and Message (Grand Rapids, MI: Reformation Heritage Books, 2012) 86. Our evangelistic emphasis on God’s holiness is not meant to dispense with His other attributes such as love, mercy, and grace. Rather, His other attributes find their most profound meaning within the context of God’s holiness.
The word “holy” is translated from the Hebrew qadosh and refers to the otherness of God. As Creator, He transcends His creation and is utterly distinct from all that He has made. Regardless of size or splendor, nothing in creation even remotely approaches the perfections of God.
Why is it so critical to explain that the Creator of the universe is holy? Because we, in our sinful state, are the antithesis of everything He is. There is no greater dichotomy demonstrating our greatest need than the juxtaposition between a holy God and sinful men. John MacArthur points out the dire implications of that infinite gulf:
God is utterly holy, and His law therefore demands perfect holiness: “For I am the Lord your God. Consecrate yourselves therefore, and be holy, for I am holy (Leviticus 11:44–45). . . . Even the gospel requires His holiness: “You shall be holy, for I am holy” (1 Peter 1:16). “Without [holiness] no one will see the Lord” (Hebrews 12:14, NKJV). Because He is holy, God hates sin. Evangelism, 154.
Putting God in His Place
When believers think about God in terms of the gospel, we usually emphasize His love and mercy. And while those are vital attributes woven throughout the gospel, we must not make the mistake of neglecting His triune nature, His sovereignty over creation, and His holiness. Doing so frequently results in the proclamation of a man-centered gospel—one that portrays God as little more than a hero swooping in at the last minute to save the day.
The truth is that sinners stand in God’s crosshairs. Sinners are God’s creation and it is His law they have violated. God is the Savior only because He is the One from whom sinners need to be saved, for “He will by no means leave the guilty unpunished” (Exodus 34:7).
When we put God at the center of the gospel, we gain a clear perspective on the offense of man’s sin and the depth of his guilt. And that’s where we’ll pick it up next time.
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