He (Paul) is telling the church in Philippi "I want to see that heart level obedience. Obedience, Not only when I’m present with you, but even more when I’m gone", and as he strives after that, in them, for them, he gives three basic commands followed by three motivators. Three reasons why they should do what he has been commanding. With the hope that they wouldn’t just be doing it while he’s watching, but that they would live this way out of a deep heart-level motivation.