1 Corinthians 5:1-5:
It is reported commonly that there is fornication among you, and such fornication as is not so much named among the Gentiles, that one should have his father’s wife.
And ye are puffed up, and have not rather mourned, that he that hath done this deed might be taken away from among you.
For I verily, as absent in body, but present in spirit, have judged already, as though I were present, concerning him that hath so done this deed,
In the name of our Lord Jesus Christ, when ye are gathered together, and my spirit, with the power of our Lord Jesus Christ,
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.
See also:
Who or What Causes Sickness?
If You Blow It
Temporary Cancelation of Sin’s Consequences Through Intercession
Sickness as Chastening and Judgment in the New Testament
Is It Ever Right to NOT Minister Healing to Someone?
Objection: Job Was a Godly Man, Yet God Let Him Get Sick
Objection: God Uses Sickness to “Break” Us