What is your interpretation of these Bible quotes....?

The literal one. I think they're pretty straight forward. The first one is saying don't be a rebel against those who are placed in authority over you, don't cheat people out of what they are owed, be joyful in doing these things because of the greater good that comes from it, etc. etc. The second one is talking about how Jesus suffered to do what was right, and was blessed for it, and so we should, too. The third one basically says we are not saved (deemed righteous) by the law, but rather by grace alone, through our faith in Jesus Christ.