1 Corinthians 5:5-7

King James Version

⁵ To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.

⁶ Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump?

⁷ Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us: