>>40731746The passage has invited much debate: AWabnitz, RTQR 18, 1909, 221ff; 289ff; 456ff; CBruston, ibid. 346ff; BEaston, AJT 16, 1912, 275–83; KProost, TT 48, 1914, 246ff; JHéring, Le royaume de Dieu et sa venue ’37; PAllen, ET 50, ’39, 233–35; ASledd, ibid. 235–37; WKümmel, Verheissung u. Erfüllung ’45, 17ff; BNoack, D. Gottesreich bei Lk (17:20–24) ’48; CRoberts, HTR 41, ’48, 1–8, citing PRossGeorg III, 1, 9: ἵνα ἐντός μου αὐτὸ εὕρω; HCadbury, Christian Century 67, ’50, 172f (within your possession or reach; cp. Tertullian, Adv. Marc. 4, 35), cp. Pol 3:3 above and JGriffiths, ET 63, ’51/52, 30f; HRiesenfeld, Nuntius 2, ’49, 11f; AWikgren, ibid. 4, ’50, 27f; PBretscher, CTM 15, ’44, 730–66; 22, ’51, 895–907. W. stress on the moral implications, RFrick, Beih. ZNW 6, 1928, 6–8, s. ARüstow, ZNW 51, ’60, 197–224; JZmijewski, D. Eschatologiereden d. LkEv, ’72, 361–97.**
pert. to what is inside an area, content τὸ ἐ. τοῦ ποτηρίου the inside of the cup=what is in the cup (cp. τὰ ἐ. τοῦ οἴκου 1 Macc 4:48, also schol. on Nicander, Alexiph. 479 τὰ ἐντός=the inside; Is 16:11) Mt 23:26.—DELG s.v. ἐν. M-M.
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., pp. 340–341). Chicago: University of Chicago Press.
Also, this link has a useful discussion on it.
https://www.gotquestions.org/kingdom-of-God-within-you.html