1 Thes 4:3-8 For this is the will of God, your sanctification: that you should abstain from sexual immorality; that each of you should know how to possess his own vessel in sanctification and honor, not in passion of lust, like the Gentiles who do not know God; that no one should take advantage of and defraud his brother in this matter, because the Lord is the avenger of all such, as we also forewarned you and testified. For God did not call us to uncleanness, but in holiness. Therefore he who rejects this does not reject man, but God, who has also given us His Holy Spirit.
Some have argued that the "vessel" in this context is the wife (Clarke, Jamieson-Fausset-Brown, Vincent, Wesley, cf. CEV, GW, GNT, RSV):
RSV: "that each one of you know how to take a wife for himself in holiness and honor"
Others believe that the "vessel" is one's own body (Morris, Green, Phillips, Webster, Zuck&Cook, Calvin, Holman, Williams, Barnes, Gill, MacArthur, cf. AMP, CEB, CJB, ERV, ESV, HCSB, MSG, NET, NIV, NLT, NRSV):
NIV: "that each of you should learn to control your own body in a way that is holy and honorable"
I have two questions:
1) What is "his own vessel" in this context?
2) What does it mean to "defraud his brother in this matter"?