The Philippian's gifts to Paul were for his sustenance. In the Bible, the Apostle Paul was imprisoned several times for preaching the gospel, and during one of his imprisonments, the Christians in Philippi sent gifts to him through Epaphroditus. These gifts were intended to provide for Paul's needs while he was in prison, such as food, clothing, and other necessities. Paul was grateful for the Philippians' generosity and expressed his appreciation in his letter to them.