God's Good Design for Marriage (Part 2): They Shall Become One Flesh

February 21, 2022

This is the second part of a multi-part series on God’s good design for marriage. Read part one.

It’s no secret that popular culture frowns upon Christian beliefs about marriage and sexuality. In American entertainment, business, media, politics, and courts of law, the prevailing view is that marriage is an optional “extra” for romantic partners, one that quickly proves inconvenient and restrictive when it outlasts emotion. In the minds of many, marriage is an outdated artifact of obsolete social conditions and inhibits the self-expression, tolerance, and liberation expected in the 21st century. The Bible’s view of marriage as a covenant union of one man and one woman for life has become so incomprehensible in America and throughout Western culture that it is seen as downright offensive.

Many Christians are influenced by our culture’s negative view of marriage—and not for the better. But we don’t have to listen to the culture’s lies; we have God’s Word, which is truth. The Bible says a lot about marriage, portraying it in such glorious splendor that the world’s flashy counterfeits look dim by comparison. Every Christian can afford to spend more time tuning out the world and tuning in to God’s Word. This series aims to examine God’s good design for marriage by taking the Word of God itself as our guide.

This series began by looking at Genesis 1:26-31, where God created “male and female.” This second installment will examine Genesis 2:24.

Moses wrote Genesis for the people of Israel before they entered the Promised Land. Genesis describes God’s promise to their ancestors Abraham, Isaac, and Jacob and the beginnings of God’s relationship with mankind.

In Genesis 2, Moses retells in greater detail the creation of man and woman on the sixth day of creation (which he had summarized in the first chapter). Moses has theological purposes for holding a microscope to God creating mankind with this second account, some of which pertain to marriage.

In Genesis 2:24, Moses summarizes the first marriage in history, explaining, “Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh.” The importance of this statement for understanding God’s design for marriage is underscored in the New Testament by Jesus (Matthew 19:5, Mark 10:8) and Paul (1 Corinthians 6:16, Ephesians 5:31). Both quote this verse to support marriage.

Thus, we learn that this verse is not a cloudy line in a quaint fable, nor an archaic notion that has passed away with the old covenant. Rather, Genesis 2:24 contains a transcendent, timeless principle of God’s created order that still applies to us today. As such, this verse is worth studying carefully.

Observations

First, notice the prescriptive language in the verbs: “shall leave… and hold fast” and “shall become.” In contrast to the narrative portions of Genesis, which describe actions and events, this verse ordains the covenant of marriage. Every human being is morally accountable to this formula.

Second, the man takes the initiative in leaving his parents and holding fast to his wife. The Holy Spirit could have inspired Moses to write, “a woman shall leave her father and her mother and hold fast to her husband.” He didn’t. In the context of Genesis 2 (which we will explore in the next part of this series), this is intentional, and it contains the seeds of both “distinctions in masculine and feminine roles” and “Adam’s headship in marriage,” as the Danvers Statement affirms. These biblical principles, which our culture hates, reflect the beauty and wisdom of God’s good design for marriage. We shouldn’t be ashamed of them.

Third, the man must leave his parents. This doesn’t mean he should desert them, for that would dishonor them (Exodus 20:12), but his relationship with his parents should change. He and his wife constitute a new and distinct family unit. A man’s wife replaces his parents as his chief relational priority. Of the many ways to apply this, perhaps the most apt for our cultural context is that men should move out of their parents’ house before they marry. A man who can’t function independently from his parents or run a household on his own isn’t fit to be married yet. To single men who are seeking a wife, get a job, get an apartment, pay some bills, and dress yourself. Show that you are responsible enough for a woman to feel safe under your leadership.

Fourth, the man must hold fast to his wife. Older translations used the word “cleave” (thus the phrase “leaving and cleaving”). Tim Keller explains in The Meaning of Marriage, “it is a Hebrew word that literally means to be glued to something.” Marriage binds together a man and woman tighter than any other natural bond. As centuries of wedding vows have acknowledged (“as long as we both shall live”), marriage is for life (see Romans 7:2). This close, intimate, exclusive relationship provides an opportunity for mutual support, encouragement, friendship, accountability, advice, and sanctification like no other human relationship. Marriage images Jesus, our “friend who sticks closer than a brother” (Proverbs 18:24).

Fifth, the man and his wife shall become one flesh. This phrase isn’t easy to explain. How, exactly, can two people become one flesh? If that seems impossible for man to achieve, it is. But Jesus helps us understand this is not God’s doing. After quoting Genesis 2:24, Jesus applies it in “a comment that explodes like thunder with the glory of marriage,” says John Piper in This Momentary Marriage. “What therefore God has joined together, let not man separate” (Mark 10:9). Piper continues, “when a couple speaks their vows, it is not a man or a woman or a pastor or parent who is the main actor—the main doer. God is. God joins a husband and a wife into a one-flesh union.” Every marriage is a covenant, an exchange of vows before God, effected and enforced by God. Because God makes a marriage, “it is not in man’s power to destroy,” says Piper.

Conclusion

Violations of the marriage bond receive frequent and severe condemnation throughout the Bible. Jesus himself quotes Genesis 2:24, in conjunction with Genesis 1:27, to condemn divorce. Adultery is forbidden by the seventh commandment (Exodus 20:14, Deuteronomy 5:18). Jesus added, “everyone who looks at a woman with lustful intent has already committed adultery with her in his heart” (Matthew 5:28). The writer of the book of Hebrews exhorted his readers, “Let marriage be held in honor among all, and let the marriage bed be undefiled, for God will judge the sexually immoral and adulterous” (Hebrews 13:4). Hundreds of other Scriptures could be added to this list. The point is clear: because God has ordained marriage as part of his good design, he takes it seriously, and he has commanded us to honor it. So, we must obey his commands and honor marriage out of both “love and fear” (Deuteronomy 13:3-4).

More can be said about marriage from the Bible’s teaching in Genesis 2:24, and future parts of this series will explore it further.

But what should be crystal clear—and what all the Bible’s teachings are founded on—is that marriage is a covenantal relationship uniting a husband and wife, which is designed and achieved by God himself. Marriage is not a social construct to be cast aside on a whim but a lifelong, moral duty watched over by its holy creator, God.

Read part three.