Restoring a fallen Christian (Galatians 6:1) deals with what should be done when a Christian
commits known sin. God gives several directions to follow when this happens.

1. A Church Body Is Not To Tolerate Known Sin In Its Midst
    a.  The Corinthian Christians tolerated known sin and were strongly rebuked by Paul for
    it (1 Cor 5:1-2)
    b.  The Thessalonian Christians were strongly commanded by Paul to take action
    against those who openly sinned (2 Thess. 3:6).

2. The Specific Steps Of Church Discipline (Mat. 18:15-17)
    Step 1 - Go alone and urge the sinning person to obey Jesus (Mat. 18:15). This is done
    is the spirit of gentleness and humility (Gal. 6:1). If the person repents of his sin, the
    matter is settled.
    Step 2 - If the person refuses to repent, bring along two or three witnesses and urge the
    sinning person to obey Jesus (Mat. 18:16).
    Step 3 - If the person still refuses to repent, tell the church so they can urge the person
    to obey Jesus (Mat. 18:17).
    Step 4 - If the person still refuses to repent, then turn away from church and social
    fellowship with him while continuing to urge him to obey Jesus (Mat.18:17). This
    means two things:
    •  On the church level, the person is not allowed to attend the services and
    meetings of the church until he turns from his sin (I Cor. 5:2, 13).  
    •  On the personal level, the congregation is to no longer associate with the
    person socially until he turns from his sin (1 Cor. 5:9; 2 Thess. 3:6; Rom. 16:17).

    This step does not mean the person can be treated harshly or cruelly, but instead, we
    are commanded to treat the person with gentleness and mildness (Gal. 6:1) and in a
    sisterly or brotherly way (2 Thess. 3:15). This also does not mean that the congregation
    must no longer talk with the person, for we are commanded to continue to urge the
    person to turn from their sin and obey Jesus (2 Thess. 3:15). What we are commanded
    to do is draw a line at everyday social conversation with the person, which would
    include sharing a meal with them (1 Cor. 5:9; 2 Thess. 3:14).  

3.  The Seriousness Of Church Discipline
    Paul wrote the Thessalonian Christians and commanded them to confront the
    disobedient members "in the name of the Lord Jesus Christ." This was the most
    authoritative way the Apostle Paul could give a command to anyone.

4. The Purpose Of Church Disciple
    a.  To lead the sinning person to repentance (2 Cor. 2:6-8)
    1.  taking action so they will be ashamed (2 Thess. 3:14)
    2.  taking action so they will fear continuing to sin (1 Tim. 5:20)
    b.  To keep sin from spreading in the church
    1.   taking action generates a fear to sin (1 Tim. 5:20)
    2.   taking action through the fourth step removes their bad influence (1 Cor. 5:6)

5. The Attitude Of Church Discipline
    a.  The sinning person is not to be treated as an enemy, but in a brotherly or sisterly way
    (2 Thess. 3:15).
    b.  There is never to be an attitude of superiority, but rather the realization that anyone
    can give in to temptation (Gal. 6:1).

6. Specific Sins Mentioned For Church Discipline
    Incest (1 Cor. 5:2), immorality (1 Cor. 5:11), covetousness (1 Cor. 5:11), idolatry (1 Cor.
    5:11), abusive speaking (1 Cor. 5:11), drunkenness (1 Cor. 5:11), swindling
    (1 Cor. 5:11), refusal to obey Scripture (2 Thess. 3:6, 14), refusal to work
    (2 Thess. 3:11), blasphemy (1 Tim. 1:20), divisiveness (Titus 3:10).

Summary:
We learn from the above information that God strongly commands churches to take action
when they learn of a member committing sin. The degree of action taken hinges entirely upon
the person's willingness to repent, and ranges from private admonishment to the public
removal of fellowship. Their repeated refusal to repent forces them farther and farther away
from the companionship of the church congregation, until they are entirely outside it. All
through this process, the congregation is to carefully watch its attitude. There must never be
an air of superiority, but only brotherly concern for the sinning Christian's welfare. The focus of
everything is to be upon rescuing the sinning Christian from his sin and restoring him to
obeying Jesus Christ.
   
Restoring Fallen Christians
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