1st Corinthians 5:6

3 For I verily, being absent in body but present in spirit, have already as though I were present judged him that hath so wrought this thing,

4 in the name of our Lord Jesus, ye being gathered together, and my spirit, with the power of our Lord Jesus,

5 to deliver such a 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 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 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;