Gordon J. Wenham, in Word Biblical Commentary: Genesis 1–15 (1987, p. 33), provides a rich theological exploration of the command to replenish the earth, interpreting it as far more than a simple directive. Wenham asserts that this command carries an inherent promise of divine enablement, assuring humanity that God Himself will provide the means and circumstances necessary to fulfill this mandate. This dual aspect—both a command and a promise—highlights God’s active role in the fulfillment of His purposes for creation.

The Theological Depth of the Command

Wenham argues that the command to “replenish the earth” is foundational to God’s creative and redemptive work. It is not merely a statement about procreation but a reflection of God’s covenantal relationship with humanity. The inclusion of this command in the creation narrative underscores humanity’s partnership with God in stewarding and populating the earth, aligning with His overarching plan to establish a flourishing, God-centered world.

Continuity Across Scripture

This command is reaffirmed and expanded upon at key moments in redemptive history, illustrating its ongoing importance in God’s plan. After the flood, God reiterates the directive to Noah and his family (Genesis 9:1), demonstrating that His purposes remain unchanged even in the face of human sin and divine judgment. The post-flood renewal mirrors the creation account, reinforcing God’s commitment to humanity’s multiplication as a sign of His covenant faithfulness.

The patriarchs—Abraham, Isaac, and Jacob—become central figures in the unfolding of this divine promise. To Abraham, God declares, “I will make my covenant between me and thee, and will multiply thee exceedingly” (Genesis 17:2). This promise is reaffirmed in Genesis 17:20 regarding Ishmael and again to Isaac in Genesis 28:3. Jacob receives a similar assurance in Genesis 35:11, underscoring that the promise of fruitfulness is integral to the Abrahamic covenant and the development of Israel as God’s chosen people.

The Genealogies as Testimonies of Fulfillment

Wenham draws special attention to the genealogies in Genesis (chapters 5, 9, 11, 25, 36, and 46) as evidence of God’s faithfulness in fulfilling the promise of fruitfulness. These genealogical records, far from being mere historical documents, are theological affirmations of God’s active involvement in human history. They demonstrate that the multiplication of humanity and the growth of nations occur according to God’s sovereign will and in direct fulfillment of His promises.

Jacob’s Testimony of God’s Faithfulness

Jacob’s reflection on God’s promises further illustrates the fulfillment of this promise. On his deathbed, he recounts God’s words to him: “Behold, I will make thee fruitful, and multiply thee, and I will make of thee a multitude of people” (Genesis 48:4; cf. Genesis 47:27). This acknowledgment not only points to the growth of Jacob’s descendants but also highlights the covenantal nature of God’s relationship with His people. The fulfillment of this promise serves as a tangible demonstration of God’s reliability and steadfast love.

Broader Implications of the Command

For Wenham, the command to “be fruitful and multiply” is deeply theological, reflecting God’s sovereign purpose and His unchanging commitment to His creation. It is a reminder of God’s ongoing relationship with humanity, a relationship marked by grace, provision, and covenantal faithfulness. This directive also points forward to the ultimate fulfillment of God’s plan in Christ, where spiritual fruitfulness and the multiplication of God’s people take on new dimensions within the context of the Church (Matthew 28:19–20).

In sum, Wenham’s interpretation of this command reveals its profound significance as both a divine directive and an assurance of God’s sustaining power. The repetition of this command throughout Scripture serves as a testament to its importance in God’s redemptive plan, reaffirming His faithfulness across generations. Far from being a simple biological imperative, the call to multiply is an enduring symbol of God’s covenantal promises and His active presence in the unfolding story of salvation.