9 The commandments, ＂You shall not commit adultery; you shall not kill; you shall not steal; you shall not covet,＂ and whatever other commandment there may be, are summed up in this saying, (namely) ＂You shall love your neighbor as yourself.＂
13 let us conduct ourselves properly as in the day, 4 not in orgies and drunkenness, not in promiscuity and licentiousness, not in rivalry and jealousy.
1 [1-7] Paul must come to grips with the problem raised by a message that declares people free from the law. How are they to relate to Roman authority? The problem was exacerbated by the fact that imperial protocol was interwoven with devotion to various deities. Paul builds on the traditional instruction exhibited in Wisdom 6:1-3, according to which kings and magistrates rule by consent of God. From this perspective, then, believers who render obedience to the governing authorities are obeying the one who is highest in command. At the same time, it is recognized that Caesar has the responsibility to make just ordinances and to commend uprightness; cf Wisdom 6:4-21. That Caesar is not entitled to obedience when such obedience would nullify God's prior claim to the believers' moral decision becomes clear in the light of the following verses.
2 [8-10] When love directs the Christian's moral decisions, the interest of law in basic concerns, such as familial relationships, sanctity of life, and security of property, is safeguarded (Romans 13:9). Indeed, says Paul, the same applies to any other commandment (Romans 13:9), whether one in the Mosaic code or one drawn up by local magistrates under imperial authority. Love anticipates the purpose of public legislation, namely, to secure the best interests of the citizenry. Since Caesar's obligation is to punish the wrongdoer (Romans 13:4), the Christian who acts in love is free from all legitimate indictment.
4  Let us conduct ourselves properly as in the day: the behavior described in Romans 1:29-30 is now to be reversed. Secular moralists were fond of making references to people who could not wait for nightfall to do their carousing. Paul says that Christians claim to be people of the new day that will dawn with the return of Christ. Instead of planning for nighttime behavior they should be concentrating on conduct that is consonant with avowed interest in the Lord's return.