Dictionary entry

εἴσειμι

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

εἴσ-ειμι

[in LXX for בּוֹא;]

to go in, enter: seq. εἰς, Ac 3:321:26, He 9:6; πρὸς Ἰάκωβον, Ac 21:18.†