Philippians is a letter of friendship and gratitude. Paul writes it while in prison, probably in Rome, but the tone that dominates the whole text is one of joy, not complaint.
The church at Philippi was the first Paul founded in Europe, in the region of Macedonia. Among all the churches he helped birth, this was the one that cared for him most through gifts, even from a distance.
It is because of this partnership in the gospel that Paul writes. Epaphroditus, sent by the Philippians with a gift for the apostle, nearly died of illness during the journey and now returns home carrying the letter.
Even in prison, Paul sees no reason for discouragement. He says that his chains have become known for Christ throughout the whole palace guard. For him, to live is Christ and to die is gain.
The heart of the letter is the hymn to Christ in chapter 2. There Paul describes the Son of God who emptied himself of his glory, became a servant, and died on the cross.
Because of this, God exalted him and gave him the name that is above every name. This is the model of humility Paul asks the Philippians to have toward one another.
The letter also faces real threats. On one side, teachers who insisted on circumcision and on their own merits before God. On the other, a disagreement between two women of the church.
Paul answers with a repeated invitation: rejoice always in the Lord. Not because circumstances are easy, but because Christ is sufficient in any situation, whether in plenty or in need.
To read Philippians is to learn that Christian joy does not depend on comfort. It is born of knowing Christ and trusting that he sustains those who rest in him.