εἴσειμι, infinitive εἰσιέναι; imperfect ἐισεηιν; (εἰμί (cf. Buttmann, 50 (43))); (from Homer down); to go into, enter: followed by εἰς with the name of the place (cf. Winer's De verb. comp. etc. Part ii., p. 11), Act_3:3; Act_21:26; Heb_9:6 (Winer's Grammar, 267 (251)); πρός τινα, Act_21:18.

εἴσειμι eiseimi 4x to go in, enter, Act_3:3 ; Act_21:18 ; Act_21:26 ; Heb_9:6

εἴσ -ειμι , [in LXX for H935 ;] to go in, enter: seq . εἰς , Act_3:3 ; Act_21:26 , Heb_9:6 ; πρὸς Ἰάκωβον , Act_21:18 .†

εἴσειμι [page 188] P Petr II. 16 .6 (mid. iii/B.C.) Φιλωνίδης δε [ . . . . . ]ωι εἰσιέναι ἔστιν [πρὸς τὸ ]ν βασιλέα , P Tor I. 1 viii. 19 (B.C. 117 6) καὶ εἰς τὸ Ἡραῖον εἰσιόντας τὸ ὅμοιον ἐπιτελεῖν . The verb is very common in notices of time, e.g. P Oxy II. 243 .41 (A.D. 79) ἀπὸ τοῦ εἰσιόντος μηνὸς Φαρμοῦθι , ib IX. 1187 .5 (A.D. 254) τῷ εἰσιόντι ἔτει , ib. X 1278 .17 (A.D. 214) τοῦ ἰσι [ό ]ντος κ̄δ̄ (ἔτους ), of the coming 24th year.

εἴσειμι inf. -ιέναι serving as fut. to εἰσέρχομαι imperf. εἰσῄειν "to go into", οὐκ Ἀχιλῆος ὀφθαλμοὺς εἴσειμι "I will" not "come before" Achilles' eyes, Il. :—more commonly with a prep., εἰς. μετ᾽ ἀνέρας Od. ; παρὰ βασιλέα Hdt. ; εἰς . . or πρός . . , id=Hdt. , attic; εἰς. εἰς σπονδάς "to enter" into a treaty, Thuc. of the chorus or of actors, "to come upon" the stage, "to enter", Plat. as attic law-term, "to come into court", Dem. "to enter on" an office, ὁ ἐσιών "the new" king, Hdt. metaph. "to come into one's mind", c. acc., id=Hdt. , attic, Eur. ; also c. dat., id=Eur. :— impers., εἰσῄει αὐτοὺς ὅπως . . , "it came into their minds" that . . , Xen. of things, τὰ εἰσιόντα "what enters into one, food", id=Xen.

εἴσ-ειμι [in LXX for בּוֹא ;] to go in, enter: before εἰς, Act.3:3 21:26, Heb.9:6; πρὸς Ἰάκωβον, Act.21:18.† (AS)