That's not very Christian behavior. We are told to love our neighbor as ourselves, not hand them over to Satan. If Jesus ate and drank with the worst sinners then we have model behavior to follow. It was the Pharisees who attacked Jesus for his association with undesirables.
Those who are disfellowshipped are those who are baptized individuals who have began living contrary to the standards of living that the scriptures say a Christian is to live. If God tells you not to steal, you don't steal. If God tells a married person they are not to be having affairs then you don't have affairs because when a married person has an affair, that's adultery. Those who are Christians and practice these things will be disfellowshipped if needed, it's really up to them on whether they want to stop doing what is wrong that they are doing.
Based on the principles of the Hebrew Scriptures, the Christian Greek Scriptures by command and precedent authorize expulsion, or disfellowshipping, from the Christian congregation. By exercising this God-given authority, the congregation keeps itself clean and in good standing before God. The apostle Paul, with the authority vested in him, ordered the expulsion of an incestuous fornicator who had taken his father’s wife. (
1Co 5:5, 11, 13) He also exercised disfellowshipping authority against Hymenaeus and Alexander. (
1Ti 1:19, 20)
Some of the offenses that could merit disfellowshipping from the Christian congregation are fornication, adultery, homosexuality, greed, extortion, thievery, lying, drunkenness, reviling, spiritism, murder, idolatry, apostasy, and the causing of divisions in the congregation. (
1Co 5:9-13; 6:9, 10; Tit 3:10, 11; Re 21:8)
The Christian congregation is also admonished by Scripture to stop socializing with those who are disorderly and not walking correctly but who are not deemed deserving of disfellowshipping yet. Paul wrote the Thessalonian congregation concerning such: “Stop associating with him, that he may become ashamed. And yet do not be considering him as an enemy, but continue admonishing him as a brother.”—
2Th 3:6, 11, 13-15.
However, regarding any who were Christians but later reject the Christian congregation or were expelled from it, the apostle Paul commanded: “Quit mixing in company with” such a one; and the apostle John wrote: “Never receive him into your homes or say a greeting to him.”—
1Co 5:11; 2Jo 9, 10.
Those who have been expelled may be received back into the congregation if they manifest sincere repentance. (
2Co 2:5-8) This also is a protection to the congregation, preventing it from being overreached by Satan in swinging from condoning wrongdoing to the other extreme, becoming harsh and unforgiving.—
2Co 2:10,