ἔσω Ion, and old Att.. form of εἴσω

(εἰς),

adv. [in LXX for etc. ;]

__1. prop. after verbs of motion (to) within, into: Mat.26:58, Mrk.14:54; with genitive, Mrk.15:16.

__2. As frequently in cl. (= cl. ἔνδον), after verbs of rest, within: Jhn.20:26, Act.5:23; οἱ ἔ. (opposite to οἱ ἔξω), 1Co.5:12; ὁ ἔ. ἄνθρωπος, Rom.7:22, 2Co.4:16, Eph.3:16.†

(AS)

to; within, into; within