Biblical Teaching on Premarital Sex and Relationships
Marriage was instituted by God at creation, when he declared "it is not good that the man should be alone" and formed woman from man's side (Genesis 2:18-24). This foundational passage establishes several principles: the unity of husband and wife, the indissolubleness of the marriage bond, monogamy as the original design, and the social equality yet distinct roles of man and wife [2]. The biblical framework for sexual relationships is thus anchored in the covenant of marriage, which Scripture describes as "honourable for all" and necessary for "preventing fornication" [1].
The Biblical Vocabulary of Sexual Union
Scripture employs specific language to describe sexual intimacy. The Hebrew verb "to know" (yada) serves as an idiom for sexual relations in contexts involving human beings—never animals, which mate by instinct [5]. This usage appears throughout the Old Testament, from Eve's conception of Cain ("Adam knew his wife," Genesis 4:1) to the attempted assault at Sodom (Genesis 19:5) [5, 9]. The New Testament continues this pattern of euphemistic language, with Matthew noting that Joseph "knew her not" until after Jesus's birth, emphasizing Mary's virginity both at conception and delivery [8]. This linguistic pattern reflects Scripture's treatment of sexual union as a profound, covenant-bound act rather than mere physical contact.
Marriage as Covenant
The prophetic literature explicitly identifies marriage as "a covenant relationship" made "in God's name" [1, 7]. Malachi 2:14-15 describes the wife as "your companion and your wife by covenant," emphasizing marriage's purpose in "raising up godly seed" [1]. This covenantal framework means sexual union carries theological weight beyond the participants themselves. The marriage covenant serves as the consistent biblical context for sexual expression, designed both for human flourishing and for reflecting God's relationship with his people [3, 4].
Fornication and Its Prevention
Paul's instruction that "to avoid fornication, let every man have his own wife, and let every woman have her own husband" (1 Corinthians 7:2) establishes marriage as the divinely appointed context for sexual activity [1]. The term "fornication" (Greek porneia) encompasses sexual activity outside marriage. The apostle's logic is straightforward: marriage is "lawful in all" and provides the proper channel for sexual desire [1]. This teaching assumes that sexual expression belongs exclusively within the marriage covenant, not as arbitrary restriction but as part of marriage's design from creation.
Historical and Canonical Context
The genealogical narratives preserve accounts of sexual misconduct precisely to demonstrate the lineage of the Messiah, showing that God's redemptive purposes advance even through flawed human history [10]. The story of Judah and Tamar (Genesis 38), for instance, includes details of adultery and deception that would seem out of place except that they form "the full links of the chain that connects the genealogy of the Saviour with Abraham" [10]. These narratives do not endorse the behavior they record; rather, they demonstrate that God's covenant faithfulness persists despite human unfaithfulness.
The prophetic use of adultery as a metaphor for Israel's spiritual unfaithfulness reinforces the seriousness of sexual sin [3, 4]. When Hosea, Isaiah, and Ezekiel employ marital imagery to describe God's relationship with his people, they assume their audience understands marriage as exclusive and binding. The metaphor works precisely because sexual fidelity within marriage mirrors covenant loyalty to God.
The New Testament Affirmation
The New Testament consistently upholds the creation ordinance of marriage. Jesus himself appeals to Genesis 2:24 when addressing divorce, pointing back to God's original design (Matthew 19:4-6). Paul extends this imagery, describing the church as Christ's bride and grounding Christian marriage in the pattern of Christ leaving his Father to unite with the church [6]. This spiritual marriage "represented by" natural marriage establishes that the one-flesh union is not merely a social arrangement but reflects divine mystery [6]. The instruction that believers should marry "only in the Lord" (1 Corinthians 7:39) further situates marriage within the covenant community [1].
Sources
- Torrey's Topical Textbook “Torrey's Topical Textbook: Marriage — Divinely instituted -- Ge 2:24. A covenant relationship -- Mal 2:4. Designed for The happiness of man. -- Ge 2:18. Increasing the human population. -- Ge 1:28; 9:1. Raising up godly seed. -- Mal 2:15. Preventing fornication. -- 1Co 7:2. The expectation of the promised seed of the woman an incentive to, in the early age -- Ge 3:15; 4:1. Lawful in all -- 1Co 7:2,28; 1Ti 5:14. Honourable for all -- Heb 13:4. Should be only in the Lord -- 1Co 7:39. Expressed by Joining together. -- Mt 19:6. Making affinity. -- 1Ki 3:1. Taking to wife. -- Ex 2:1. Giving daughte”
- Smith's Bible Dictionary “Smith's Bible Dictionary: Marriage — + Its origin and history .--The institution of marriage dates from the time of man's original creation. (Genesis 2:18-25) From (Genesis 2:24) we may evolve the following principles: (1) The unity of man and wife, as implied in her being formed out of man. (2) The indissolubleness of the marriage bond, except on; the strongest grounds, Comp. (Matthew 19:9) (3) Monogamy, as the original law of marriage (4) The social equality of man and wife. (5) The subordination of the wife to the husband. (1 Corinthians 11:8,9; 1 Timothy 2:13) (6) The respective duties of ”
- Ezek (Protestant academic) “Tyndale House on Ezek 23:4: 23:4 Marriage is commonly used in the Bible as a symbol for the covenant relationship between God and his people (e.g., Isa 54:1-8; Eph 5:22-33). Adultery symbolizes Israel’s spiritual unfaithfulness (e.g., Hos 1–3). God makes his covenants in spite of, not because of, his people’s character (Rom 5:6-11).”
- Ezekiel (Protestant academic) “Tyndale House on Ezekiel 23:4: 23:4 Marriage is commonly used in the Bible as a symbol for the covenant relationship between God and his people (e.g., Isa 54:1-8; Eph 5:22-33). Adultery symbolizes Israel’s spiritual unfaithfulness (e.g., Hos 1–3). God makes his covenants in spite of, not because of, his people’s character (Rom 5:6-11).”
- Genesis (Protestant academic) “Tyndale House on Genesis 4:1: 4:1 had sexual relations (literally knew): In certain contexts, the Hebrew term meaning “to know” is an idiom for sexual knowledge of another person (4:17; 19:33, 35). It is never used of animals, which mate by instinct. • With the Lord’s help:: Eve fulfilled her God-given role of procreation despite the negative effects of the Fall (see 3:16, 20). • I have produced: Cain (Hebrew qayin) sounds like a Hebrew term (qanah) that can mean “produce” or “acquire.””
- Ephesians (Presbyterian) “Jamieson, Fausset & Brown on Ephesians 5:31: For--The propagation of the Church from Christ, as that of Eve from Adam, is the foundation of the spiritual marriage. The natural marriage, wherein "a man leaves father and mother (the oldest manuscripts omit 'his') and is joined unto his wife," is not the principal thing meant here, but the spiritual marriage represented by it, and on which it rests, whereby Christ left the Father's bosom to woo to Himself the Church out of a lost world: Eph 5:32 proves this: His earthly mother as such, also, He holds in secondary account as compared with His spir”
- Proverbs (Presbyterian) “Jamieson, Fausset & Brown on Proverbs 2:17: guide . . . youth--lawful husband (Jer 3:4). covenant . . . God--of marriage made in God's name.”
- Matthew (Baptist/Reformed) “John Gill on Matthew 1:25: And knew her not,.... Or "but he knew her not", answering to the Hebrew that is, had carnal knowledge of her, or copulation with her, though his wife. The words are an euphemism, or a modest way of expressing the conjugal act, and is a very ancient one, see Gen 4:1 and what has been used in nations and languages. And this conduct of his was necessary, till she had brought forth her firstborn; that it might be manifest not only that she conceived, being a virgin, but also that she brought forth, being a virgin: for both are signified in the prophecy before related, ”
- Sefaria (Jewish (Rationalist)) “Abraham Ibn Ezra on Genesis 19:5: THAT WE MAY KNOW THEM. A euphemism for sexual intercourse.”
- Genesis (Presbyterian) “Jamieson, Fausset & Brown on Genesis 38:24: Bring her forth, and let her be burnt--In patriarchal times fathers seem to have possessed the power of life and death over the members of their families. The crime of adultery was anciently punished in many places by burning (Lev 21:9; Jdg 15:6; Jer 29:22). This chapter contains details, which probably would never have obtained a place in the inspired record, had it not been to exhibit the full links of the chain that connects the genealogy of the Saviour with Abraham; and in the disreputable character of the ancestry who figure in this passage, we ”