1 Corinthians 5:7-8 Clean out the old leaven, that you may be a new lump, since you really are unleavened. For Christ our passover has been sacrificed for us:

RKJNT⁽ⁱ⁾ ⁷ Clean out the old leaven, that you may be a new lump, since you really are unleavened. For Christ our passover has been sacrificed for us: ⁸ Therefore let us keep the feast, not with old leaven, the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth.