Theological Basis for Mentioning God's Kingship in Evangelism

The earliest Christian preaching centered on the announcement that "the Saviour had come into the world," and those who proclaimed this message were called evangelists because they bore "good news" (evangelion) ^[1]. This proclamation was not merely about personal salvation but about the arrival of a kingdom. Matthew's Gospel, for instance, presents the Redeemer "as the promised King of the kingdom of God" ^[1], and Mark records Jesus "preaching the kingdom of God" alongside his call to repentance (Mark 1:14-15) ^[2]. The kingdom theme pervades the New Testament's evangelistic vocabulary, appearing as "kingdom of Christ," "kingdom of heaven," and simply "the kingdom," all denoting Christ's mediatorial authority, the blessings flowing from his rule, and the collective body of his subjects ^[2].

The Kingdom as Central to the Gospel Message

Paul's final recorded words in Acts illustrate the inseparability of kingdom proclamation from evangelism: he spent his Roman imprisonment "preaching the Kingdom of God, and teaching the things concerning the Lord Jesus Christ" ^[3]. This pairing is not incidental. The kingdom of God denotes three interconnected realities: Christ's mediatorial authority over the earth, the blessings that flow from this rule, and the Church as the collective subjects of this kingdom ^[2]. To announce Jesus without reference to his kingship would be to present an incomplete gospel, omitting the scope of his authority and the nature of the community he establishes.

Charles Hodge articulates this connection systematically: "God as the creator and preserver of the universe, and as infinite in his being and perfections, is, in virtue of his nature, the absolute sovereign of all his creatures" ^[7]. Humanity's revolt placed the race under "the kingdom of darkness of which Satan is the head," but God in grace established a counter-kingdom through the Messiah ^[7]. The Old Testament predicted a universal and everlasting kingdom with the Messiah as its head, portrayed consistently as a king (Genesis 49:10; Numbers 24:17; 2 Samuel 7:16) ^[8]. Christ exercises this royal authority in multiple spheres: a "kingdom of power" encompassing all creation, and the Messianic kingdom proper, which he came to establish ^[9].

Kingdom Language and Spiritual Reality

The kingdom's presence is not validated by eloquent speech but by spiritual power. Paul contrasts empty rhetoric with authentic kingdom reality: "For the kingdom of God is not in word, but in power" ^[5]. The Jamieson-Fausset-Brown commentary clarifies that "not empty 'speeches,' but the manifest 'power' of the Spirit attests the presence of 'the kingdom of God' (the reign of the Gospel spiritually)" ^[12]. This distinction matters for evangelism: mentioning God's kingship is not mere theological ornamentation but a claim about present spiritual authority and transformation.

The phrase "kingdom of God" carries multiple referents in Scripture. It sometimes denotes the future state of blessedness, sometimes the visible Church as those who profess Christ as king, and sometimes the invisible Church of true believers ^[6]. This semantic range does not dilute the concept but enriches it, showing that God's kingship operates across temporal and spiritual dimensions. When Jesus taught that the kingdom is "like a grain of mustard-seed" that grows into the greatest herb, or like leaven hidden in meal until the whole is leavened, he illustrated its gradual but comprehensive expansion ^[10].

Theological Warrant for Proclamation

Tertullian, defending the resurrection against allegorical reinterpretation, notes that when Christ speaks of "the kingdom of God" alongside judgment and resurrection, these terms carry "a plain and absolute sense" that resists being "forced into parable" ^[11]. The kingdom is not a metaphor for private spirituality but a concrete reality inaugurated by Christ's coming and consummated at his return. The Reformed tradition emphasizes that Christ's kingly office is one of three mediatorial functions—prophet, priest, and king—inseparable aspects of his single mediatorial work ^[4]. He exercises this kingship "in his Church, and over his Church, and over all things in behalf of his Church" ^[4].

Evangelism that omits kingdom language risks presenting Jesus as a private savior rather than the cosmic Lord who claims authority over every sphere of existence. The kingdom's gradual progress through history, though it has "always had a kingdom upon earth," moves toward universal extension ^[10], making the evangelist's task not merely individual conversion but heralding the advance of Christ's reign.

Sources

Easton's Bible Dictionary “Easton's Bible Dictionary: Gospels — The central fact of Christian preaching was the intelligence that the Saviour had come into the world (Matt. 4:23; Rom. 10:15); and the first Christian preachers who called their account of the person and mission of Christ by the term evangelion_ (= good message) were called _evangelistai (= evangelists) (Eph. 4:11; Acts 21:8). There are four historical accounts of the person and work of Christ: "the first by Matthew, announcing the Redeemer as the promised King of the kingdom of God; the second by Mark, declaring him a prophet, mighty in deed and word'; th”
Easton's Bible Dictionary “Easton's Bible Dictionary: Kingdom of God — (Matt. 6:33; Mark 1:14, 15; Luke 4:43) = "kingdom of Christ" (Matt. 13:41; 20:21) = "kingdom of Christ and of God" (Eph. 5:5) = "kingdom of David" (Mark 11:10) = "the kingdom" (Matt. 8:12; 13:19) = "kingdom of heaven" (Matt. 3:2; 4:17; 13:41), all denote the same thing under different aspects, viz.: (1) Christ's mediatorial authority, or his rule on the earth; (2) the blessings and advantages of all kinds that flow from this rule; (3) the subjects of this kingdom taken collectively, or the Church.”
Acts “preaching the Kingdom of God, and teaching the things concerning the Lord Jesus Christ with all boldness, without hindrance. -- Acts 28:31”
Easton's Bible Dictionary “Easton's Bible Dictionary: Kingly office of Christ — One of the three special relations in which Christ stands to his people. Christ's office as mediator comprehends three different functions, viz., those of a prophet, priest, and king. These are not three distinct offices, but three functions of the one office of mediator. Christ is King and sovereign Head over his Church and over all things to his Church (Eph. 1:22; 4:15; Col. 1:18; 2:19). He executes this mediatorial kingship in his Church, and over his Church, and over all things in behalf of his Church. This royalty differs from that whic”
1 Corinthians (Baptist/Reformed) “John Gill on 1 Corinthians 4:20: For the kingdom of God,.... By "the kingdom of God" is not meant the kingdom of heaven, or the ultimate glory and happiness of the saints; though that is a kingdom prepared by God, which he gives to his children, calls them to by his grace, and will give them an abundant entrance into, when time shall be no more with them; and though that is not attained to "in", or "by word", by mere talk and profession; not everyone that says Lord, Lord, shall enter into it; or that professes the name of Christ, and prophesies in it; but "in" or "by power"; through the power ”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 3, section 65: God, just as our Lord insists on the necessity of the public confession of his name. Confession is not a means of salvation. It does not convey the benefits of Christ’s redemption. It is a duty which Christ imposes on all who desire to be confessed by Him in the last day. The Reformed acknowledge that baptism has this necessity of precept. 2. The phrase “kingdom of God” sometimes means heaven, the future state of blessedness; sometimes the external or visible Church, as consisting of those who profess to acknowledge Christ as their king; ”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 2, section 121: § 1. The Church God’s Kingdom . God as the creator and preserver of the universe, and as infinite in his being and perfections, is, in virtue of his nature, the absolute sovereign of all his creatures. This sovereignty He exercises over the material world by his wisdom and power, and over rational beings as a moral ruler. From this rightful authority of God, our race revolted, and thereby became a part of the kingdom of darkness of which Satan is the head. To this kingdom the mass of mankind has ever since belonged. But God, in his. grac”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 3, section 94: § 4. The Kingdom of Heaven. In the account given of the final judgment in Matthew xxv. 31-46 , we are told that the King shall “say to those on his right hand, Come, ye blessed of my Father, inherit the kingdom we prepared for you from the foundation of the world.” 1. In the Old Testament it was predicted that God would set up a kingdom, which was to be universal and everlasting. 2. Of this kingdom the Messiah was to be the head. He is everywhere in the Old Testament set forth as a king. (See Gen. xlix. 10 ; Num. xxiv. 17 ; 2 Sam. vii. 16”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 2, section 123: Messianic kingdom; that kingdom which the Messiah came into the world to establish. That kingdom, however, is presented in different aspects, or, in other words, Christ exercises his royal authority, so to speak, in different spheres. 600 Christ’s Dominion over the Universe. Christ has what theologians are accustomed to call his kingdom of power. As Theanthropos and as Mediator, all power in heaven and upon earth has been committed to his hands. ( Matt. xxviii. 18 .) In Psalm viii. 6 , it is declared to be the purpose of God that all thi”
CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 3, section 94: among the Gentiles.” The Scriptures abound with passages of similar import. It is not only asserted that the kingdom of Christ is to attain this universal extension by slow degrees, but its gradual progress is illustrated in various ways. Our Lord compares his kingdom to a grain of mustard-seed, which is indeed the least of all seeds, but when it is grown it is the greatest among herbs; and to heaven which a woman took, and hid in three measures of meal, till the whole was leavened. 857 9. Although God has always had a kingdom upon earth,”
Schaff ANF/NPNF (Patristic) “ANF Vol 3: Tertullian — CHAP. XXXIII.--SO MUCH FOR THE PROPHETIC SCRIPTURES. IN THE GOSPELS, CHRIST'S PARABLES, AS EXPLAINED BY HIMSELF, HAVE A CLEAR REFERENCE TO THE RESURRECTION OF THE FLESH. (part 2): you."[1] And "Tell them that the kingdom of God is at hand."[2] And again, "It shall be recompensed to you at the resurrection of the just."[3] Now, if the mention of these events (I mean the judgment-day, and the kingdom of God, and the resurrection) has a plain and absolute sense, so that nothing about them can be pressed into an allegory, neither should those statements be forced into parab”
1 Corinthians (Presbyterian) “Jamieson, Fausset & Brown on 1 Corinthians 4:20: kingdom of God is not in word--Translate, as in Co1 4:19, to which the reference is "speech." Not empty "speeches," but the manifest "power" of the Spirit attests the presence of "the kingdom of God" (the reign of the Gospel spiritually), in a church or in an individual (compare Co1 2:1, Co1 2:4; Th1 1:5).”

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