Philippians 1 Part 1: Servants of Christ

Paul honors Timothy by including him in the intro, and is in essence holding him up as a reminder to the Philippians of an example of the very thing, that in writing this letter, Paul wants to encourage and bring about in the minds and lives of the saints at Philippi by God's grace.
Timothy is selfless and gets outside of himself…..////

So, Paul's preferred title for both, himself AND for timothy is this high title of Servant!!