εἰσβάλλειν
From LSJ
Μεταλαμβάνει ὁ δοῦλος τοῦ Θεοῦ (Ὄνομα) Σῶμα καὶ Αἷμα Χριστοῦ, εἰς ἄφεσιν ἁμαρτιῶν καὶ ζωὴν αἰώνιον. Ἀμήν. → The servant of God (Name) partakes of the Body and Blood of Christ for the remission of sins and life eternal.
Greek > English (Woodhouse Verbs Reversed)
(see also εἰσβάλλω): attack, enter, break into, cast in, fling into, go into, make an incursion, throw in, throw into