Rom 13:8-10
"Owe no one anything, except to love each other, for the one who loves another has fulfilled the law."
Love (agape) is not a feeling — it is an ethical principle that fulfills the entire law. The commandments are summarized in 'You shall love your neighbor as yourself.'
Rom 13:11-14
"Besides this you know the time, that the hour has come for you to wake from sleep... The night is far gone; the day is at hand. So then let us cast off the works of darkness and put on the armor of light."
The eschatological urgency motivates ethics: the 'day' of Christ’s coming is near. 'Put on the Lord Jesus Christ' — the Christian life is to clothe oneself with Christ, allowing His life to manifest in ours.