4:1-8 To abide in the faith of the gospel is not enough, we must abound in the work of faith. The rule according to which all ought to walk and act, is the commandments given by the Lord Jesus Christ. Sanctification, in the renewal of their souls under the influences of the Holy Spirit, and attention to appointed duties, constituted the will of God respecting them. In aspiring after this renewal of the soul unto holiness, strict restraint must be put upon the appetites and senses of the body, and on the thoughts and inclinations of the will, which lead to wrong uses of them. The Lord calls none into his family to live unholy lives, but that they may be taught and enabled to walk before him in holiness. Some make light of the precepts of holiness, because they hear them from men; but they are God's commands, and to break them is to despise God.
4. know—by moral self-control.
how to possess his vessel—rather as Greek, "how to acquire (get for himself) his own vessel," that is, that each should have his own wife so as to avoid fornication (1Th 4:3; 1Co 7:2). The emphatical position of "his own" in the Greek, and the use of "vessel" for wife, in 1Pe 3:7, and in common Jewish phraseology, and the correct translation "acquire," all justify this rendering.
in sanctification—(Ro 6:19; 1Co 6:15, 18). Thus, "his own" stands in opposition to dishonoring his brother by lusting after his wife (1Th 4:6).
honour—(Heb 13:4) contrasted with "dishonor their own bodies" (Ro 1:24).