is used (a) of "illicit sexual intercourse," in John 8:41; Acts 15:20,29; 21:25; 1—Corinthians 5:1; 6:13,18; 2—Corinthians 12:21; Galatians 5:19; Ephesians 5:3; Colossians 3:5; 1—Thessalonians 4:3; Revelation 2:21; 9:21; in the plural in 1—Corinthians 7:2; in Matthew 5:32; 19:9 it stands for, or includes, adultery; it is distinguished from it in 15:19; Mark 7:21; (b) metaphorically, of "the association of pagan idolatry with doctrines of, and professed adherence to, the Christian faith," Revelation 14:8; 17:2,4; 18:3; 19:2; some suggest this as the sense in Revelation 2:21 .
denotes "a man who indulges in fornication, a fornicator," 1—Corinthians 5:9,10,11; 6:9; Ephesians 5:5 , RV; 1—Timothy 1:10 , RV; Hebrews 12:16; 13:4 , RV; Revelation 21:8; 22:15 , RV (AV, "whoremonger").
"to commit fornication," is used (a) literally, Mark 10:19; 1—Corinthians 6:18; 10:8; Revelation 2:14,20 , see (a) and (b) above; (b) metaphorically, Revelation 17:2; 18:3,9 .
a strengthened form of No. 1 (ek, used intensively), "to give oneself up to fornication," implying excessive indulgence, Jude 1:7 .
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