'One Flesh' Union — Does Genesis 2:24 Establish Hierarchy? (Genesis 2:24)

Complementarian position: Genesis 2:24 establishes the marriage covenant, but the man's headship is established in the preceding verses (creation order, naming, the woman being made "for" him). The one-flesh union does not negate the authority structure — it describes the depth of the relationship within which male headship operates. Keller and others argue that "leaving father and mother" shows the man takes initiative, which is consistent with male leadership.

Egalitarian rebuttal: (1) The one-flesh language is inherently egalitarian. There is no hierarchy within "one flesh" — the concept describes two becoming a single unit. If the man "rules" within one flesh, it is like the body fighting itself. (2) The man leaves his parents — his prior authority structure — to form a new bond. This is the opposite of patriarchal marriage where the woman is absorbed into the man's family. The text presents the man as the one who reorients, who abandons his prior position, who is drawn toward the woman. (3) The verb davaq (cling) is covenant loyalty language used elsewhere for Israel's relationship with God. The man clings to his wife with the same tenacity that Israel is called to cling to God. This describes devotion, not dominion. (4) Jesus quotes Genesis 2:24 as the definitive statement on marriage (Matt 19:5-6) and draws the conclusion "what God has joined together, let no man separate" — the emphasis is on the indissoluble union, not on hierarchy within it. (5) Paul in Ephesians 5:31 cites this verse in his discussion of marriage, and his application is that husbands should "love their wives as their own bodies" (Eph 5:28) — self-giving love, not authority, is the practical outworking of one-flesh theology.

Key point: The foundational marriage text describes leaving, cleaving, and union — not authority, headship, or rule. Any theology of marriage that begins with hierarchy rather than one-flesh union has inverted the biblical priority.