📖 Biblical Definition
To be unequally yoked is to be harnessed to a partner whose nature, pace, and direction differ so much that the joint pull is destructive to both. The Mosaic law forbade plowing with an ox and an ass together (Deuteronomy 22:10) — different sizes, different paces, different temperaments, both injured. Paul applies the figure: "Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?" (2 Corinthians 6:14). The principle forbids the binding of a believer to an unbeliever in any covenant relationship requiring shared traction — chiefly marriage and ministry partnership. Friendly evangelism remains; covenant union with the unconverted does not.
📜 Webster 1828 Definition
Joined together with an unfit partner; particularly, a believer covenanted with an unbeliever.
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Yoked: bound with a yoke; coupled.
Unequally: not on the same terms; mismatched. The Mosaic prohibition (Deut 22:10) of plowing with an ox and an ass together stands behind Paul's figure: the two animals pull at different paces and shoulder weight differently, so the yoke chafes both.
📖 Key Scripture
2 Corinthians 6:14 — "Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness?"
2 Corinthians 6:15 — "And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?"
Deuteronomy 22:10 — "Thou shalt not plow with an ox and an ass together."
1 Corinthians 7:39 — "She is at liberty to be married to whom she will; only in the Lord."
⚠️ Modern Corruption
Modern Christianity often treats ‘unequally yoked’ as outdated dating advice; Paul treats it as a structural prohibition for the covenant household.
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Paul's logic is structural: yoke partners must share enough to pull together. A believer and an unbeliever do not share the deepest things — what they worship, where they are headed, what counts as a successful day. To bind them by covenant is to set up an inevitable chafe.
This is why 1 Corinthians 7:39 inserts only in the Lord: a Christian widow may remarry whom she will, but the partner must share the yoke at the deepest level. The same principle scales to ministry partnership and binding business covenants.
🔗 Greek & Hebrew Roots
Greek has a compound verb that names the unequal yoking specifically.
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G2086 — ἰτεροζυγέω (heterozygeō) — to be yoked unequally; to be paired with an incompatible partner.
Note: built from heteros (different in kind) plus zygos (yoke); the difference is not merely degree but kind.
Usage
"Marriage is the deepest yoke; do not make it heterozygos."
"Ministry partnership is a yoke too — choose accordingly."
"Better single in the Lord than yoked apart from Him."