LSJ
Med., make one swear, ἐ. τινὶ ποιεῖν τι IG 12(5).697.4 (Syros); ἐ. τινὶ ὅρκον ib. 9 (1).643 (Cephallenia), cf. J. AJ 8.15.4 (v.l. ἐνωρκήσατο); — later in Act., ἐνορκίζω ὑμᾶς τὸν κύριον ἀναγνωσθῆναι τὴν ἐπιστολήν 1 Ep. Thess. 5.27; ἐ. ὑμῖν τὸν βασιλέα τῶν δαιμόνων Tab. Defix. Aud. 26.15 (Cyprus, iii AD).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
ἐν-ορκίζω,
[in LXX: Neh.13:25 A (שָׁבַע hi.)* ;]
to adjure: with dupl. accusative (like ορκίζω, which see), ὑμᾶς τ. κῦριον, 1Th.5:27.†
(AS)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars