1Co 5:7-8 (King James)

   ⁷ Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us: ⁸ Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth.

1Co 5:7-8 (Stephanus 1550)

⁷ ἐκκαθάρατε οὖν τὴν παλαιὰν ζύμην ἵνα ἦτε νέον φύραμα καθώς ἐστε ἄζυμοι καὶ γὰρ τὸ πάσχα ἡμῶν ὑπὲρ ἡμῶν ἐτύθη χριστός ⁸ ὥστε ἑορτάζωμεν μὴ ἐν ζύμῃ παλαιᾷ μηδὲ ἐν ζύμῃ κακίας καὶ πονηρίας ἀλλ᾽ ἐν ἀζύμοις εἰλικρινείας καὶ ἀληθείας