to put something to the test to find out whether it is genuine, and so to prove and approve it
At its root this word belongs to the assayer: the goldsmith holding a coin over the flame to see whether it is real, or the official who scrutinizes a candidate before letting him take office. That concrete picture drives every use, from a man going out to try out five yoke of oxen he has just bought (Luke 14:19) to the command to test everything and hold on to what is good (1 Thessalonians 5:21).
Two things always travel together here, and they are two moments of one action rather than two separate ideas. First comes the examination: you subject something to real, hands-on trial to discover its true quality. Then comes the verdict: because the whole point of an assay is to certify what is genuine, the word carries a hopeful, positive slant. One tests expecting and hoping that what is tested will pass. So the same word can lean toward the examining ("test, examine, put to the trial") or toward the outcome ("prove, approve, recognize as genuine"), depending on the sentence.
The New Testament stretches this everyday word across a wide range.
- Fire will test the true worth of each person's work (1 Corinthians 3:13)
- trials refine faith the way fire refines gold (1 Peter 1:7)
- the renewed mind can sift and approve what God wants (Romans 12:2)
- deacons are vetted before they serve (1 Timothy 3:10)
- the community must weigh spirits and prophecies (1 John 4:1)
- each believer must examine himself (2 Corinthians 13:5)
Behind all of it stands the Old Testament picture of God as the refiner who tests hearts, burning off the dross so that what is pure remains.
Because the aim is always to certify the genuine, the word never merely condemns. Even its sharpest use, where people who refused to reckon God worth acknowledging are handed over to a mind that itself fails the test (Romans 1:28), works by turning the assayer's verdict back on them.
Nuances
Whether the phrase rendered "the things that differ" means discerning right from wrong or approving what is truly excellent.
- minorityIt means discerning the things that differ, a moral capacity to distinguish right from wrong.; J. B. Lightfoot, St Paul's Epistle to the Philippians; M. R. Vincent, Philippians and Philemon (ICC)
- majorityIt means approving the things that really matter or are superior, a love-informed discernment; the two options are complementary rather than opposed.; G. D. Fee, Paul's Letter to the Philippians (NICNT); P. T. O'Brien, The Epistle to the Philippians (NIGTC); M. Silva, Philippians (BECNT, 2nd ed.)