Parallel
1 Corinthians 5:8
Nestle 1904 Greek New Testament · Berean Standard Bible
ὥστε ἑορτάζωμεν μὴ ἐν ζύμῃ παλαιᾷ μηδὲ ἐν ζύμῃ κακίας καὶ πονηρίας ἀλλ’ ἐν ἀζύμοις εἰλικρινείας καὶ ἀληθείας
Therefore let us keep the feast, not with the old bread, leavened with malice and wickedness, but with the unleavened bread of sincerity and of truth.