not [to be used] in lustful passion, like the Gentiles who do not know God and are ignorant of His will; and that [in this matter of sexual misconduct] no man shall transgress and defraud his brother because the Lord is the avenger in all these things, just as we have told you before and solemnly warned you. For God has not called us to impurity, but to holiness [to be dedicated, and set apart by behavior that pleases Him, whether in public or in private]. So whoever rejects and disregards this is not [merely] rejecting man but the God who gives His Holy Spirit to you [to dwell in you and empower you to overcome temptation].
Now concerning brotherly love, you have no need for anyone to write you, for you have been [personally] taught by God to love one another [that is, to have an unselfish concern for others and to do things for their benefit]. For indeed you already do practice it toward all the believers throughout Macedonia [by actively displaying your love and concern for them]. But we urge you, brothers and sisters, that you excel [in this matter] more and more, and to make it your ambition to live quietly and peacefully, and to mind your own affairs and work with your hands, just as we directed you