1 Corinthians 5:8

8so thatὥστεwe might celebrate the feastἑορτάζωμεν,notμὴwithἐνleavenζύμῃoldπαλαιᾷnotμηδὲwithἐνleavenζύμῃof maliceκακίαςandκαὶwickednessπονηρίας,butἀλλ’withἐνunleavened [bread]ἀζύμοιςof sincerityεἰλικρινείαςandκαὶof truthἀληθείας.

so that we may keep the feast, not with old leaven, not with leaven of malice and wickedness, but with unleavened [bread] of sincerity and of truth.