Hart likes to present what he calls a “literal” translation to bring out the “real meaning” of the text as it would have echoed in the minds of the original audience, or some such goal. Of course, he is not the first to attempt such a translation, and the problem that I have is that they tend to ignore how the text was historically read from ancient times onward, and substitute a rather subjective criterion for how the translator thinks it should have been read.
On κόλασις:
② transcendent retribution, punishment (ApcSed 4:1 κόλασις καὶ πῦρ ἐστιν ἡ παίδευσίς σου.—Diod S 3, 61, 5; 16, 61, 1; Epict. 3, 11, 1; Dio Chrys. 80 [30], 12; 2 Macc 4:38 al. in LXX; Philo, Spec. Leg. 1, 55; 2, 196; Jos., Ant. 1, 60 al.; Just.; Did., Gen., 115, 28; 158, 10) ApcPt 17:32; w. αἰκισμός 1 Cl 11:1. Of eternal punishment (w. θάνατος) Dg 9:2 (Diod S 8, 15, 1 κ. ἀθάνατος). Of hell: τόπος κολάσεως ApcPt 6:21 (Simplicius in Epict. p. 13, 1 εἰς ἐκεῖνον τὸν τόπον αἱ κολάσεως δεόμεναι ψυχαὶ καταπέμπονται); ἐν τῇ κ. ἐκείνῃ 10:25; ibid. ἐφορῶσαι τὴν κ. ἐκείνων (cp. ApcEsdr 5:10 p. 30, 2 Tdf. ἐν τῇ κ.). ἐκ τῆς κ. ApcPt Rainer (cp. ἐκ τὴν κ. ApcSed 8:12a; εἰς τὴν κ. 12b and TestAbr B 11 p. 116, 10 [Stone p. 80]). ἀπέρχεσθαι εἰς κ. αἰώνιον go away into eternal punishment Mt 25:46 (οἱ τῆς κ. ἄξιοι ἀπελεύσονται εἰς αὐτήν Iren. 2, 33, 5 [Harv. I 380, 8]; κ. αἰώνιον as TestAbr A 11 p. 90, 7f [Stone p. 28]; TestReub 5:5; TestGad 7:5; Just., A I, 8, 4; D. 117, 3; Celsus 8, 48; pl. Theoph. Ant. 1, 14 [p. 90, 13]). ῥύεσθαι ἐκ τῆς αἰωνίου κ. rescue fr. eternal punishment 2 Cl 6:7. τὴν αἰώνιον κ. ἐξαγοράζεσθαι buy one’s freedom fr. eternal pun. MPol 2:3 v.l. κακαὶ κ. τοῦ διαβόλου IRo 5:3. κ. τινος punishment for someth. (Ezk 14:3, 7; 18:30; Philo, Fuga 65 ἁμαρτημάτων κ.) ἔχειν κόλασίν τινα τῆς πονηρίας αὐτοῦ Hs 9, 18, 1. ἀναπαύστως ἕξουσιν τὴν κ. they will suffer unending punishment ApcPt Bodl. 9–12. ὁ φόβος κόλασιν ἔχει fear has to do with punishment 1J 4:18 (cp. Philo, In Flacc. 96 φόβος κολάσεως).
And on αἰώνιος:
③ pert. to a period of unending duration, without end (Diod S 1, 1, 5; 5, 73, 1; 15, 66, 1 δόξα αἰ. everlasting fame; in Diod S 1, 93, 1 the Egyptian dead are said to have passed to their αἰ. οἴκησις; Arrian, Peripl. 1, 4 ἐς μνήμην αἰ.; Jos., Bell. 4, 461 αἰ. χάρις=a benefaction for all future time; OGI 383, 10 [I B.C.] εἰς χρόνον αἰ.; EOwen, οἶκος αἰ.: JTS 38, ’37, 248–50; EStommel, Domus Aeterna: RAC IV 109–28) of the next life σκηναὶ αἰ. Lk 16:9 (cp. En 39:5). οἰκία, contrasted w. the οἰκία ἐπίγειος, of the glorified body 2 Cor 5:1. διαθήκη (Gen 9:16; 17:7; Lev 24:8; 2 Km 23:5 al.; PsSol 10:4 al.) Hb 13:20. εὐαγγέλιον Rv 14:6; κράτος in a doxolog. formula (=εἰς τοὺς αἰῶνας) 1 Ti 6:16. παράκλησις 2 Th 2:16. λύτρωσις Hb 9:12. κληρονομία (Esth 4:17m) vs. 15; AcPl Ha 8, 21. αἰ. ἀπέχειν τινά (opp. πρὸς ὥραν) keep someone forever Phlm 15 (cp. Job 40:28). Very often of God’s judgment (Diod S 4, 63, 4 διὰ τὴν ἀσέβειαν ἐν ᾅδου διατελεῖν τιμωρίας αἰωνίου τυγχάνοντα; similarly 4, 69, 5; Jer 23:40; Da 12:2; Ps 76:6; 4 Macc 9:9; 13:15) κόλασις αἰ. (TestReub 5:5) Mt 25:46; 2 Cl 6:7; κρίμα αἰ. Hb 6:2 (cp. κρίσις αἰ. En 104:5). θάνατος B 20:1. ὄλεθρον (4 Macc 10:15) 2 Th 1:9. πῦρ (4 Macc 12:12; GrBar 4:16.—SibOr 8, 401 φῶς αἰ.) Mt 18:8; 25:41; Jd 7; Dg 10:7 (cp. 1QS 2:8). ἁμάρτημα Mk 3:29 (v.l. κρίσεως, κολάσεω, and ἁμαρτίας). On the other hand, of eternal life (Maximus Tyr. 6, 1d θεοῦ ζωὴ αἰ.; Diod S 8, 15, 3 life μετὰ τὸν θάνατον lasts εἰς ἅπαντα αἰῶνα; Da 12:2; 4 Macc 15:3;PsSol PsSol 3:12; OdeSol 11:16c; JosAs 8:11 cod. A [p. 50, 2 Bat.]; Philo, Fuga 78; Jos., Bell. 1, 650; SibOr 2, 336) in the Reign of God: ζωὴ αἰ. (Orig., C. Cels. 2, 77, 3) Mt 19:16, 29; 25:46; Mk 10:17, 30; Lk 10:25; 18:18, 30; J 3:15f, 36; 4:14, 36; 5:24, 39; 6:27, 40, 47, 54, 68; 10:28; 12:25, 50; 17:2f; Ac 13:46, 48; Ro 2:7; 5:21; 6:22f; Gal 6:8; 1 Ti 1:16; 6:12; Tit 1:2; 3:7; 1J 1:2; 2:25; 3:15; 5:11, 13, 20; Jd 21; D 10:3; 2 Cl 5:5; 8:4, 6; IEph 18:1; Hv 2, 3, 2; 3, 8, 4 al. Also βασιλεία αἰ. 2 Pt 1:11 (ApcPt Rainer 9; cp. Da 4:3; 7:27; Philo, Somn. 2, 285; Mel., P. 68, 493; OGI 569, 24 ὑπὲρ τῆς αἰωνίου καὶ ἀφθάρτου βασιλείας ὑμῶν; Dssm. B 279f, BS 363). Of the glory in the next life δόξα αἰ. 2 Ti 2:10; 1 Pt 5:10 (cp. Wsd 10:14; Jos., Ant. 15, 376.—SibOr 8, 410 φῶς αἰῶνιον). αἰώνιον βάρος δόξης 2 Cor 4:17; σωτηρία αἰ. (Is 45:17; Ps.-Clem., Hom. 1, 19) Hb 5:9; short ending of Mk. Of unseen glory in contrast to the transitory world of the senses τὰ μὴ βλεπόμενα αἰώνια 2 Cor 4:18.—χαρά IPhld ins; δοξάζεσθαι αἰωνίῳ ἔργῳ be glorified by an everlasting deed IPol 8:1. DHill, Gk. Words and Hebr. Mngs. ’67, 186–201; JvanderWatt, NovT 31, ’89, 217–28 (J).
Arndt, W., Danker, F. W., Bauer, W., & Gingrich, F. W. (2000). A Greek-English lexicon of the New Testament and other early Christian literature (3rd ed., p. 33). Chicago: University of Chicago Press.