But the Lord is faithful, who shall stablish you, and keep you from evil.  And we have confidence in the Lord touching you, that ye both do and will do the things which we command you.  And the Lord direct your hearts into the love of God, and into the patient waiting for Christ.
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.
2 Thessalonians 3:3-6