1 Corinthians 5:7-9

American Standard Version

⁷ Purge out the old leaven, that ye may be a new lump, even as ye are unleavened. For our passover also hath been sacrificed, even Christ: ⁸ wherefore let us ^[a]keep the feast, not with old leaven, neither with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.

⁹ I wrote unto you in my epistle to have no company with fornicators;