1 Paul and Timothy, slaves of Christ Jesus, to all the saints in Christ Jesus in Philippi with the overseers and deacons: 2 Grace to you and peace from God our Father and Lord Jesus Christ. Philippians 1:1-2 (translated from the NA28 Greek text)
In vv1-2 Paul and Timothy gives the standard Christian greeting that was very common in the early Church. Notice that it is from both Paul and Timothy, who identify themselves as δοῦλοι Χριστοῦ Ἰησοῦ (slaves of Christ Jesus), but it addressed to all the ἁγίοις ἐν Χριστῷ Ἰησοῦ (saints in Christ Jesus) at Philippi….
The word “saints” translates ἁγίοις, which is actually a form of an adjective that means “holy.” That root word is ἅγιος (hagios), which in the Dative form, as used in this passage, designates “saints.” Paul used this word in Ephesians 2:19 saying, you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God. Who are the “overseers?” This is the Greek word ἐπισκόποις the Dative, Plural of ἐπίσκοπος (episkopos), “overseer, bishop.” In the Greek, it literally refers to someone who “looks over” or “watches over” a group of people. It is translated as “overseers” or “elders” in the church. Paul gives their qualifications in 1 Timothy 3:2 and Titus 1:7. What we must understand my brethren is that in 1 Peter 2:25, Peter refers to our Lord Jesus Christ as “the Shepherd and Overseer of your souls.” Therefore, Jesus is, the chief overseer of our lives. Those men who are appointed as elders and such in our churches function on His behalf and should use His life as a model.