In this chapter the apostle gives earnest exhortations to abound in holiness, with a caution against uncleanness, enforced with several arguments (Th1 4:1-8). He then mentions the great duties of brotherly love, and quietness with industry in our callings (Th1 4:9-12). And concludes with comforting those who mourned for their relations and friends that died in the Lord (Th1 4:13-18).