In your relationships with one another, have the same mindset as Christ Jesus: Who, being in very nature God, did not consider equality with God something to be used to his own advantage; rather, he made himself nothing by taking the very nature of a servant, being made in human likeness. And being found in appearance as a man, he humbled himself by becoming obedient to death — even death on a cross!
It is true this passage is rich with Christological precepts and teaches us a great deal about the Incarnation of God in Jesus. However, we must not lose sight of the fact that Paul’s primary goal is pastoral not academic. God is more concerned about “your attitude” than your knowledge (though the former depends upon the latter). It is essential to understand what God is teaching us here, viz., that there is a vital relationship between what was accomplished for us by God Incarnate and our behavior toward others. To miss this aspect is to miss the entire teaching of the entire passage!