Paul writes to the Philippians from prison expressing his gratitude for their partnership in spreading the gospel. He is certain that God will continue the good work He began in them until Christ's return. Paul shares in God's favor toward the Philippians, loving them with the compassion of Christ. He prays that their love and knowledge will grow so they may live pure lives until Christ's return, bringing glory to God. Paul wants them to know that despite his imprisonment, the gospel continues to spread through him and give believers confidence to speak without fear.