Understanding the The Messianic Heir

All of God’s covenantal purposes converge in Jesus Christ. As the eternal Son who would take on our humanity, he is Mediator of the covenant of redemption; as the second Adam, he has fulfilled the covenant of creation on behalf of the elect; as the incarnate, crucified, and risen Savior and Lord, he is head and heir of the covenant of grace, along with all whom he has redeemed.

The Faithful Adam and True Israel

Like Adam, Israel failed to drive the serpent out of God’s sanctuary, succumbing to his seduction. But God promised to preserve a remnant from destruction, from whom the Messiah would come, who would finally crush the serpent’s head and deliver not only Israel but the nations.

Messianic Savior: Son of David

The Davidic covenant is like that with Abraham: an unconditional, unilateral promise of God’s own faithfulness to his Word—in David’s case, the promise of an heir who would reign everlastingly (2 Sam. 7:11–17 and reiterated throughout the prophets). The New Testament takes pains to identify Jesus as this royal son of David’s line. Yet he would not restore the temporal theocracy of the Jewish nation but rather would reign over all the earth in righteousness and peace, bringing Jews and Gentiles together in the unending kingdom promised to David.

Son of Man, the Second Adam

The Son of Man is God’s earthly messianic representative, who is given everlasting dominion over all the kingdoms of the earth—although his kingdom does not arise from any earthly regime (see esp. Dan. 7:9–27). In the Gospels, this title is Jesus’ favorite self-designation, emphasizing his mission to judge, to save, and to reignAlthough Son of Man, as the fulfillment of Adamic sonship, often emphasizes Jesus’ humanity (e.g., Matt. 20:28; Mark 2:27–28), especially in John’s gospel this title carries a simultaneous emphasis on Jesus’ deity (e.g., John 3:13; John 6:53–58; 8:28).

Servant of the Lord

In Isaiah’s Servant Songs (esp. chaps. 42, 49, 50, 52–53, 61), Israel’s corporate commission as God’s covenant servant is embodied in the person of the Messiah to come, the true and faithful Israel, who will secure redemption through obedience and suffering. Jesus proclaimed himself to be this servant (Luke 4:16–21), as did the apostles (e.g., Matt. 12:17–21).

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