AUTHOR AND DATE
No modern interpreter of repute doubts that the author of this letter is the apostle Paul. Paul identifies himself at the outset of the letter, and there is nothing to lead us to conclude that the letter was forged. It is very much Pauline in style, drawing several parallels to other books of Pauline authorship, none more than the epistle to the Romans (i.e. Phil. 1:3-7 and Rom. 1:8-11; Phil. 1:9-10 and Romans 2:18). The real question is when and where the book was written.
There have been several ideas as to where Paul was when this letter was composed. The point of origin down to three: Rome, Ephesus, or Caesarea. Ephesus is assumed to be the location from where Paul wrote this letter by many particularly because of the issue of distance. Paul apparently communicated with Philippi several times while imprisoned, which leads many to conclude that Paul must have been imprisoned close to Philippi. This view is not widely accepted, mainly because we have no evidence of Paul
Bibliography: MacArthur, John. The MacArthur Quick Reference Guide to the Bible. Illinois: W. Publishing Group, 2001 Hunter, Archibald M. The Layman 's Bible Commentary, Vol. 22. Virginia: John Knox Press. Muller, Jacobus J. The New International Commentary on the New Testament. Michigan: Eerdman 's Publishing, 1984. Moule, H.C.G. Studies in Philippians. Michigan: Kregel Publications, 1977. Calvin, John. Commentaries on the Epistles of Paul the Apostle to the Philippians, Colossians, and Thessalonians. Michigan: Eerdman 's Publishing, 1957. Fee, Gordon M. Paul 's Letter to the Philippians. Michigan: Eerdman 's Publishing, 1995. Anders, Max. Holman New Testament Commentary, vol. 8. Tennessee: Broadman and Holman, 1999. Exell, Joseph S. The Biblical Illustrator, vol. 47. Michigan: Baker Books House, 1959. Wuest, Kenneth S. Wuest 's Word Studies: Philippians in the Greek New Testament for the English Reader. Michigan: Eerdman 's Publishing, 1953. De Vos, Craig S. Church and Community Cinflicts: The Relationships of the Thessalonian, Corinthian, and Philippian Churches with their Wider Civic Communities. Atlanta: Scholar 's Press, 1999.