The second chapter of Philippians is amazing! Verses 1-11 include several of the most foundational teachings of Christianity.
First, the nature of Christian community (remember Ephesians 4?) is that we do not look out for ourselves, but for others and regard them as better than ourselves. The church is a community ordered around loving others not loving ourselves.
Second, the nature of Christ is explained. He was equal with God—Christ is God. But God in Christ gave up all his heavenly glory in order to come to earth and died. We know from other passages that it was for our sins that he died. He was the sin offering that pays for our sin and allows us to have peace with God (Rom. 5). But there is more yet! He did not stay dead! Because he was so obedient in giving up his privilege, God exalted him and gave him a name above all names (after all he is God!).
Finally, the end of all things is briefly explained. In the end, not just Christians, but every person in all the world—every tongue will confess and every knee will bow—will recognize Jesus as Lord to the glory of God the Father. Some day there will be no debate. Some day there will be no competition for worship. Jesus, God come in the flesh, will be seen by all as God above all gods and everyone (heaven, earth and under the earth, what else is left?) will acknowledge it.
This nature of Jesus is the reason Paul tells us to regard others as better. It is Jesus ‘ example. He was “better” than everyone, but he gave up his life for us. What on earth is there that we should refuse to do for each other?!