2 Thessalonians 3:6
Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us. Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us.
In the name of the Lord Jesus Christ believers are commanded to withdraw from every brother who walks disorderly and not according to the tradition received. That withdrawing is a Bible rule and duty laid on the church and its gospel workers to separate from fellowship anyone who persists in disregarding the instruction given by God's ministers and who does not live according to the teaching received. The tradition received is Paul's own example of orderly conduct, that he did not behave disorderly, did not eat anyone's bread for nothing, but worked with labor night and day so as not to be chargeable or a burden to any, in order to give an example to follow of diligence in temporal matters joined with untiring zeal for Christ.
Walking disorderly means refusing to work, working not at all but being busybodies, neglecting daily duties, and giving up to sloth and aimless excitement in idle waiting for immediate deliverance at Christ's coming, contrary to the rule that if anyone will not work neither should he eat. The charge to the disorderly is therefore to work with quietness and eat their own bread. The command belongs together with prayer that the word of the Lord may have free course and be glorified, with deliverance from unreasonable and wicked men who have not faith, with confidence that believers do and will do the things commanded, with the Lord establishing believers and keeping them from evil and directing their hearts into the love of God and into patient waiting for Christ, and with the charge to the faithful not to be weary in well doing.
The faithful response required is to take up God-given and God-appointed work bravely and in the fear of God, to stand fast in faith and hold the traditions taught, to be faithful in truth so others receive light, and to continue without weariness in well doing. The separation is corrective and not the final separation, so those withdrawn from are still to be counted not as enemies but admonished as brothers. The rule does not authorize anyone to decide who is truly saved or to carry out the final separation between true believers and those without Christ's righteousness.
Discipline of disorderly members remains required within a free, universal invitation to Christ's feast that must go to all, including those in the byways and hedges and in gross darkness. No servant is permitted to refuse admittance to any who come or to take responsibility for the final separation, even though those who come are a mixed company of true believers alongside apparent believers who have never put on Christ and do not have on the robe of his righteousness. Disorderly conduct includes following one's own judgment without regard for the brethren, drifting from the established landmarks of faith, and sowing seeds of doubt and infidelity while mingling tares with wheat, a course that leads to disorder and can draw people away and draw others into delusion.
Guarding against this disorder requires teachable hearts, shared doctrine, and unity of spirit, with ministers respecting one another's judgment and testing relationships and teachings by Scripture so the church is protected from division. For medical missionaries the verse means withdrawing from every disorderly brother unless he repents and is converted, breaking the spell of men who are not an honor to God and refusing to cling to and exalt any such man. Obeying it is a life-and-death question carried out by every means of spiritual culture through the Holy Spirit's instruction.