Title: Philippians 1
Content:  Philippians 1 is the first chapter of the Epistle to the Philippians in the New Testament of the Christian Bible. It is authored by Paul the Apostle about mid-50s to early 60s AD and addressed to the Christians in Philippi, written either in Rome or Ephesus. This chapter contains the greeting, thanksgiving, prayer and exhortation as an introduction (overture) to the major narratives in the next chapters.
Title: Epistle to the Philippians
Content:  The Epistle to the Philippians, commonly referred to as Philippians, is a Pauline epistle of the New Testament of the Christian Bible. The epistle is attributed to Paul the Apostle and Timothy is named with him as co-author or co-sender. The letter is addressed to the Christian church in Philippi. Paul, Timothy, Silas (and perhaps Luke) first visited Philippi in Greece (Macedonia) during Paul's second missionary journey from Antioch, which occurred between approximately 49 and 51 AD. In the account of his visit in the Acts of the Apostles, Paul and Silas are accused of "disturbing the city". There is a general consensus that Philippians consists of authentically Pauline material, and that the epistle is a composite of multiple letter fragments from Paul to the church in Philippi. These letters could have been written from Ephesus in 52–55 AD or Caesarea Maritima in 57–59, but the most likely city of provenance is Rome, around 62 AD, or about 10 years after Paul's first visit to Philippi.
Title: Epistle of Polycarp to the Philippians
Content: There is also a forceful epistle written by Polycarp to the Philippians, from which those who wish to do so, and are anxious about their salvation, can learn the character of his faith, and the preaching of the truth. The Epistle of Polycarp to the Philippians (commonly abbreviated '''Pol. Phil.''') is an epistle attributed to Polycarp, an early bishop of Smyrna, and addressed to the early Christian church in Philippi. It is widely believed to be a composite of material written at two different times (see ), in the first half of the second century. The epistle is described by Irenaeus as follows: The epistle is one of a number believed to have been written by Polycarp, but is the only extant document. It was composed in Greek, but the Greek text has not been preserved in its entirety; there is also a Latin translation of the epistle. Moreover, a few quotations of it are preserved in Syriac.
Title: Philippians 3
Content:  Philippians 3 is the third chapter of the Epistle to the Philippians in the New Testament of the Christian Bible. It is authored by Paul the Apostle, probably in the mid-50s or early 60s CE and addressed to the Christians in Philippi. This chapter contains Paul's comments and exhortations centering on a narrative about his life.
Title: Philippians 4
Content:  Philippians 4 is the fourth and final chapter of the Epistle to the Philippians in the New Testament of the Christian Bible. It is authored by Paul the Apostle about mid-50s to early 60s CE and addressed to the Christians in Philippi. This chapter contains Paul's final exhortation, thanks for support and conclusion of the epistle.
Title: Epistle to Philemon
Content:  The Epistle of Paul to Philemon, known simply as Philemon, is one of the books of the Christian New Testament. It is a prison letter, co-authored by Paul the Apostle with Timothy, to Philemon, a leader in the Colossian church. It deals with the themes of forgiveness and reconciliation. Paul does not identify himself as an apostle with authority, but as "a prisoner of Jesus Christ", calling Timothy "our brother", and addressing Philemon as "fellow labourer" and "brother". Onesimus, a slave that had departed from his master Philemon, was returning with this epistle wherein Paul asked Philemon to receive him as a "brother beloved". Philemon was a wealthy Christian, possibly a bishop of the house church that met in his home in Colossae. This letter is now generally regarded as one of the undisputed works of Paul. It is the shortest of Paul's extant letters, consisting of only 335 words in the Greek text.
Title: Philippians 2
Content:  Philippians 2 is the second chapter of the Epistle to the Philippians in the New Testament of the Christian Bible. It is authored by Paul the Apostle about mid-50s to early 60s AD and addressed to the Christians in Philippi. Jesuit theologian Robert Murray notes that a narrative in verses 5-11 about Christ, "who humbled himself, by becoming obedient to death" is central to this chapter. German protestant theologian Ernst Lohmeyer argued in 1928 that verses 6-11 were an existing hymn about Christ which Paul quotes in his letter, a theory which "has come to dominate both exegesis of Philippians and study of early Christology and credal formulas".
Title: Epistle to the Philippians
Content:  first collection of Pauline epistles may have been published. Today, a number of scholars believe that Philippians is a composite of multiple letter fragments. According to the theologian G. Walter Hansen, "The traditional view that Philippians was composed as one letter in the form presented in the NT [New Testament] can no longer claim widespread support." Nevertheless, many scholars continue to argue for the unity of Philippians. Regardless of the literary unity of the letter, scholars agree that the material that was compiled into the Epistle to the Philippians was originally composed in Greek, sometime during the 50s or early 60s AD.
Title: Epistle to the Ephesians
Content:  The Epistle to the Ephesians, also called the Letter to the Ephesians and often shortened to Ephesians, is the tenth book of the New Testament. Its authorship has traditionally been attributed to Paul the Apostle but starting in 1792, this has been challenged as Deutero-Pauline, that is, written in Paul's name by a later author strongly influenced by Paul's thought, probably "by a loyal disciple to sum up Paul’s teaching and to apply it to a new situation fifteen to twenty-five years after the Apostle’s death".
Title: Epistle of Ignatius to the Philadelphians
Content:  The Epistle of Ignatius to the Philadelphians (often abbreviated '''Ign. Phil.''') is an epistle attributed to Ignatius of Antioch, a second-century bishop of Antioch, and addressed to the church in Philadelphia of Asia Minor. It was written during Ignatius' transport from Antioch to his execution in Rome.

Question: who was the book of philippians written to?
Answer: the church at Philippi.
Philippians.