Vine's Expository Dictionary of NT Words
Adulterer, Adulterous, Adultery
"an adulteress," is used (a) in the natural sense, 2 Peter 2:14; Romans 7:3; (b) in the spiritual sense, James 4:4; here the RV rightly omits the word "adulterers." It was added by a copyist. As in Israel the breach of their relationship with God through their idolatry, was described as "adultery" or "harlotry" (e.g., Ezekiel 16:15 ff; 23:43 ), so believers who cultivate friendship with the world, thus breaking their spiritual union with Christ, are spiritual "adulteresses," having been spiritually united to Him as wife to husband, Romans 7:4 . It is used adjectivally to describe the Jewish people in transferring their affections from God, Matthew 12:39; 16:4; Mark 8:38 . In 2 Peter 2:14 , the lit. translation is "full of an adulteress" (RV, marg.).
is used in Matthew 5:27,28,32 (in ver. 32 some texts have No. 1); Matthew 19:18; Mark 10:19; Luke 16:18; 18:20; John 8:4; Romans 2:22; 13:9; James 2:11; in Revelation 2:22 , metaphorically, of those who are by a Jezebel's solicitations drawn away to idolatry.
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Vines, W. E., M. A. Entry for 'Adulterer, Adulterous, Adultery'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/dictionaries/eng/ved/a/adulterer-adulterous-adultery.html. 1940.