What does 'Be fruitful and multiply' mean?

The phrase "Be fruitful and multiply" (Hebrew: ",פְּרוּ וּרְבוּ" _p'ru ur'vu_) is one of the most foundational divine commands and blessings in the Old Testament, first appearing in Genesis 1:28, immediately after the creation of humanity. The command is twofold: "Be fruitful" (פְּרוּ, _p'ru_, from the root פר"ה, _parah_, meaning to bear fruit, to increase) and "multiply" (וּרְבוּ, _ur'vu_, from the root רב"ה, _rabah_, meaning to become many, to increase greatly). It signifies not only a biological imperative for procreation to fill the earth but also carries a broader mandate for humanity to flourish, develop, and exercise responsible stewardship over creation. This initial command establishes God's design for human propagation and the establishment of human society. This command is reiterated after the Flood to Noah (Genesis 9:1, 7) and to Jacob/Israel (Genesis 35:11), underscoring its importance as a consistent divine intention for humanity. It is intrinsically linked to the concept of covenant and blessing, promising not just survival but an abundance of descendants, which was a primary marker of blessing in the ancient world. Beyond mere population growth, the phrase implicitly conveys a spiritual and cultural mandate: to expand God's image-bearers across the globe, to cultivate the earth, and to steward its resources, reflecting God's own creative and ordering nature. Thus, "Be fruitful and multiply" encapsulates both biological reproduction and a broader call to cultural development and responsible dominion within God's creation, ensuring the perpetuation of life and the flourishing of human civilization under divine authority.

In the ancient Near East, fertility and numerous offspring were universally regarded as supreme blessings, often linked to divine favor and the continuation of the family line, clan, and nation. Barrenness was often seen as a curse or a sign of divine displeasure. Creation accounts from Mesopotamia (like the Enuma Elish) often depict humanity's purpose as serving the gods by providing food and offerings, or alleviating their workload. The Israelite narrative in Genesis stands distinct by portraying humanity as created in God's image, endowed with a unique dignity, and given a divine mandate to procreate and exercise dominion over creation, reflecting a co-regent role rather than mere servitude. This emphasis on filling the earth and subduing it also implies a call to expand civilization and culture within the divine order, contrasting with a worldview where humanity might be subservient to capricious deities. Archaeological finds confirm the centrality of fertility cults and symbols in surrounding cultures, highlighting the biblical emphasis on human procreation as part of God's good design, distinct from pagan practices.

The theological significance of "Be fruitful and multiply" transcends mere biological instruction; it is a declaration of God's foundational purpose for humanity. It encapsulates God's blessing, His desire for humanity to thrive, and His delegation of authority for stewardship. This command initiates the 'cultural mandate,' where humans are called not only to fill the earth but also to develop its potential, bring order out of wilderness, and create civilization. It underscores the sanctity of life and the divine institution of marriage and family as the primary means for this multiplication. Moreover, it speaks to God's covenant faithfulness, as the promise of numerous descendants becomes a hallmark of His covenants with Abraham and his posterity.