📖 Biblical Definition
Marital fidelity is the covenant loyalty of one spouse to the other through life — sexual exclusivity, emotional commitment, vow-keeping unto death. Hebrews summarizes the call and the warning: "Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge" (Hebrews 13:4). The seventh commandment forbids the breach: "Thou shalt not commit adultery" (Exodus 20:14). Christ extends it inward: "whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart" (Matthew 5:28). Christian fidelity is therefore costly in mind, eyes, and body. The man who has guarded eyes, governed thoughts, and refused secondary attachments is the man who can be trusted with a wife.
📜 Webster 1828 Definition
(Composite.) The covenant loyalty of one spouse to the other through life.
expand to see more
The seventh commandment (Ex 20:14) is foundational. Christ's extension in Mt 5:28: whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. The fidelity standard is internal and external.
Malachi 2:14-16 names marital infidelity as the LORD's direct concern: the LORD hath been witness between thee and the wife of thy youth, against whom thou hast dealt treacherously. The Lord witnesses every marriage covenant.
📖 Key Scripture
Exodus 20:14 — "Thou shalt not commit adultery."
Matthew 5:28 — "Whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart."
Hebrews 13:4 — "Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge."
Malachi 2:16 — "For the LORD, the God of Israel, saith that he hateth putting away."
⚠️ Modern Corruption
Modern culture has made marital infidelity statistically normal; Scripture treats it as covenant treachery the Lord will judge.
expand to see more
Malachi 2's line is striking: the LORD hath been witness. Every wedding has a divine Witness whose memory does not fade. Treachery against the wife of one's youth is treachery in His sight.
The household's marital fidelity is therefore a daily covenantal commitment, not a default state. Eyes guarded; thoughts disciplined; heart kept; body reserved. The Lord's blessing on the household runs through this faithfulness.
🔗 Greek & Hebrew Roots
Hebrew na'aph (to commit adultery); Greek moicheia.
expand to see more
Hebrew na'aph — to commit adultery.
Greek moicheia — adultery; behind the seventh-commandment violation.
Usage
"Every wedding has a divine Witness whose memory does not fade."
"Eyes guarded; thoughts disciplined; heart kept; body reserved."
"The Lord's blessing runs through this faithfulness."