πορνεία, 
πορνείας, 
ἡ (
πορνεύω), the 
Sept. for 
תַּזְנוּת, 
זְנוּת, 
זְנוּנִים, 
fornication (
Vulg. fornicatio (and (
Revelation 19:2) 
prostitutio)); used
a. properly, of illicit sexual intercourse in general (
Demosthenes, 403, 27; 433, 25): 
Acts 15:20, 
29; 
Acts 21:25 (that this meaning must be adopted in these passages will surprise no one who has learned from 
1 Corinthians 6:12ff how leniently converts from among the heathen regarded this vice and how lightly they indulged in it; accordingly, all other interpretations of the term, such as of marriages within the prohibited degrees and the like, are to be rejected); 
Romans 1:29 Rec.; 
1 Corinthians 5:1; 
1 Corinthians 6:13, 
18; 
1 Corinthians 7:2; 
2 Corinthians 12:21; 
Ephesians 5:3; 
Colossians 3:5; 
1 Thessalonians 4:3; 
Revelation 9:21; it is distinguished from 
μοιχεία in 
Matthew 15:19; 
Mark 7:21; and 
Galatians 5:19 Rec.; used of adultery ((cf. 
Hosea 2:2 (4), etc.)), 
Matthew 5:32; 
Matthew 19:9. 
b. In accordance with a form of speech common in the O. T. and among the Jews which represents the close relationship existing between Jehovah and his people under the figure of a marriage (cf. Gesenius, Thesaurus, i., p. 422{a} following), 
πορνεία is used metaphorically of the worship of idols: 
Revelation 14:8; 
Revelation 17:2, 
4; 
Revelation 18:3; 
Revelation 19:2; 
ἡμεῖς ἐκ πορνείας οὐ γεγεννήμεθα (we are not of a people given to idolatry), 
ἕνα πατέρα ἔχομεν τόν Θεόν, 
John 8:41 (
ἄθεος μέν ὁ ἄγονος, 
πολύθεος δέ ὁ ἐκ πόρνης, 
τυφλωττων περί τόν ἀληθῆ πατέρα καί διά τοῦτο πολλούς ἀνθ' ἑνός γονεῖς αἰνιττόμενος, 
Philo de mig. Abr. § 12; 
τέκνα πορνείας, of idolaters, 
Hosea 1:2; (but in John, the passage cited others understand physical descent to be spoken of (cf. Meyer))); of the defilement of idolatry, as incurred by eating the sacrifices offered to idols, 
Revelation 2:21. 
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