Berean Standard Bible (BSB)
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.
World English Bible (WEB)
Therefore let us keep the feast, not with old yeast, neither with the yeast of malice and wickedness, but with the unleavened bread of sincerity and truth.
Strong's King James
Therefore{G5620} let us keep the feast{G1858}{(G5725)}, not{G3361} with{G1722} old{G3820} leaven{G2219}, neither{G3366} with{G1722} the leaven{G2219} of malice{G2549} and{G2532} wickedness{G4189}; but{G235} with{G1722} the unleavened{G106} bread of sincerity{G1505} and{G2532} truth{G225}.
The F.O.G *
(8) So then, let's celebrate the feast, not in old leaven nor in leaven of evil maliciousness but rather with the unleavened bread of pure motives and firm-truth.
The F.O.G Message *
Young's Literal Translation
so that we may keep the feast, not with old leaven, nor with the leaven of evil and wickedness, but with unleavened food of sincerity and truth.