1 Corinthians 5 (KJV)

1 It is reported commonly that there is fornication among you, and such fornication as is not so much as named among the Gentiles, that one should have his father's wife.
2 And ye are puffed up (high and mighty), and have not rather mourned, that he that hath done this deed might be taken away from among you.

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 (rising of bread, rising of sin) 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:
8 Therefore let us keep the feast, not with old leaven (rising of bread, rising of sin), neither with the leaven  (rising of bread, rising of sin) of malice (revenge) and wickedness; but with the unleavened bread of sincerity and truth.

9 I wrote unto you in an epistle not to company with fornicators:
10 Yet not altogether with the fornicators of this world, or with the covetous (greedy), or extortioners (freeloaders), or with idolaters (atheists); for then must ye needs go out of the world.
11 But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous (greedy), or an idolator (atheists), or a railer (slanderer), or a drunkard, or an extortioner (freeloader); with such an one no not to eat.
12 For what have I to do to judge them also that are without? do not ye judge them that are within?
13 But them that are without God judgeth. Therefore put away from among yourselves that wicked person.