Philippians 2:12-18 English Standard Version (ESV)
Lights in the World
12 Therefore, my beloved, as you have always obeyed, so now, not only as in my presence but much more in my absence, work out your own salvation with fear and trembling, 13 for it is God who works in you, both to will and to work for his good pleasure.
14 Do all things without grumbling or disputing, 15 that you may be blameless and innocent, children of God without blemish in the midst of a crooked and twisted generation, among whom you shine as lights in the world, 16 holding fast to the word of life, so that in the day of Christ I may be proud that I did not run in vain or labor in vain. 17 Even if I am to be poured out as a drink offering upon the sacrificial offering of your faith, I am glad and rejoice with you all. 18 Likewise you also should be glad and rejoice with me.
The book of Philippians is a Prison Epistle (letter written while in prison). Paul wrote it about 62 A.D. as he anticipated his release from prison. They key personalities are the Apostle Paul, Timothy, Epaphroditus, Euodia, and Syntyche. It was written to show his appreciation and love to the Philippians in a thank-you letter for their continued help and support, and also to encourage their growth.