Philippians 1:10

Textus Receptus:
εις το δοκιμαζειν υμας τα διαφεροντα ινα ητε ειλικρινεις και απροσκοποι εις ημεραν χριστου

King James:
That ye may approve things that are excellent; that ye may be sincere and without offence till the day of Christ;

Comments:
approve: Paul here uses a form of the same word that Peter uses for the "trial" of the believers' faith in 1 Peter 1:7. His prayer for them to have their lives mixed with excellence is in no way a prayer for them to have a life of ease. This fact of the Christian life is scattered throughout the book, as in chapter 2:5-8.

excellent: Literally, the word means something like "carried through." The things Paul wants to be in the Philippians' lives are things that surpass much of what is in the world, and things that can only come as a result of the their faithful patience and even endurance. James 1:3 also makes this point, and also uses the word for "approve" in this verse.

sincere and without offense: "Sincere" comes from words meaning "judged in the light of the sun." Being without offense as a Christian implies neither obsequiousness nor pandering, but instead living transparently with integrity.

till the day of Christ: Everything a believer does is in the context of his confident expectation and anticipation of Christ's return. It is no surprise that Paul gives his clearest explanation of the content of the gospel in a chapter whose point is made by the relationship between the resurrection and the return of Christ (1 Corinthians 15).

Paraphrase:
My prayer then is also toward your experience of the things that surpass what is in this world and what most people experience, with the result that you will be free from the hindrances which cause so many others to stumble--not just in appearance, but even when you are examined in the clear light of day--right up until the day when that light really does shine on you, the day Christ returns for you.