Paul transitions to a focus on God's provision in verse 20. He begins with his recurring theme of rejoicing. Paul's initial reason for writing this letter was to thank the readers for a recent financial gift Epaphroditus had brought to Rome. The generosity of the Philippian Christians was consistent and much appreciated by Paul (Philippians 1:3–7).
He recognizes that the Philippians have an ongoing and sincere interest in his well-being. Paul knew about their support for him, regardless of whether they sent additional financial help. He stresses this further by recognizing that there had not been a recent opportunity to give financial support before this gift. More than likely, the Philippians had no one to take a gift to Paul until Epaphroditus left to visit him in Rome. Only then did these believers have a safe way to send support to Paul during his time under house arrest.