The serpent beguiled Eve (ο οφις εξηπατησεν Hευαν). Paul's only mention of the serpent in Eden. The compound εξαπαταω means to deceive completely.

Lest by any means (μη πως). Common conjunction after verbs of fearing.

Corrupted (φθαρη). Second aorist passive subjunctive with μη πως of φθειρω, to corrupt.