The first verse is;
The sense of this verse is difficult, I feel. If it is taken as "the sincerity of your love", then what is the opposite? I suspect it is κενοδοξία "outward show" (synonym with ματαιοδοξία). My basis for the line of thinking that makes κενοδοξία the opposite of τὸ γνήσιον (NB not γνησιότης which seems to have a meaning restricted to the original family sense)is;2 Corinthians 8:8 wrote:Οὐ κατ’ ἐπιταγὴν λέγω, ἀλλὰ διὰ τῆς ἑτέρων σπουδῆς καὶ τὸ τῆς ὑμετέρας ἀγάπης γνήσιον δοκιμάζων.
I believe that the rendering in our lexica of κενοδοξία / κενόδοξος as "conceit" is a hand-me-down rendering of a convenient Latin rendering, which was then explained with "conceit". The untranslated lexica suggest that the word κενοδοξία seems to mean "outward show" - being seen to be something, but internally having nothing. The opposite of the genuineness of "love" (and the other fruits of the spirit) is mere outward show. Love etc which is claimed, but not expressed because actually it is not there.Galatians 5:22 (part) ... 26 (part) wrote:Ὁ δὲ καρπὸς τοῦ πνεύματός ἐστιν ἀγάπη κτλ ... Μὴ γινώμεθα κενόδοξοι
The next verse raises issue of it's own;
There is no indication given in the text as to whom this is addressed, so it is someone that Paul knows that everyone else who reads it will know who he is talking about. σύζυγος is ordinarily a word for "spouse", so I'm wondering whether Paul's addressing his wife here? To assume that for arguement's sake, then γνήσιος has the "legitimate member of the family", "legally married wife" meaning and the antonym would be something like παλλακή "concubine".Philipians 4:3 (RP)(part)) wrote:Ναὶ, ἐρωτῶ καί σε, σύζυγε γνήσιε, συλλαμβάνου αὐταῖς
In the other two examples where it is statedly talking about a (father-son) family relationship, it seems that the opposite of γνήσιος would be νόθος "bastard", "illegitimate"
1Timothy 1:2 (part) wrote:Τιμοθέῳ γνησίῳ τέκνῳ ἐν πίστει·
cf.Titus 1:4 (part) wrote:Τίτῳ γνησίῳ τέκνῳ κατὰ κοινὴν πίστιν
Hebrews 12:8 (RP)(part) wrote:ἄρα νόθοι ἐστὲ καὶ οὐχ υἱοί