Philippians 1:10

That ye may approve things that are excellent
Or "try things that differ". There are some things that differ one from other; as morality and grace, earthly things, and heavenly things, carnal and spiritual, temporal and eternal things, law and Gospel, the doctrines of men, and the doctrines of Christ; all which differ as much as chaff and wheat, as gold, silver, precious stones, and wood, hay, stubble. These are to be tried and proved; they are not to be received without distinction, but should be examined, which is right and best to be chosen and preferred; and to such trial and examination it is necessary that a man should be transformed, by the renewing of his mind, that he should have spiritual light, knowledge, and experience, have his spiritual senses exercised to discern the difference of things, and also the guidance, direction, and influence of the Spirit of God: and this trial must be made, not according to carnal reason, and the judgment and dictates of it; for the most excellent things are above it, and out of its sphere, and therefore judged foolish, and rejected by it; but according to the word of God, the Scriptures of truth, in the light of the divine Spirit, and with spiritual judgment and sense; when some things will be found excellent, as Christ, and the knowledge of him in his person, offices, grace, righteousness, blood, sacrifice, and satisfaction, and the several truths of the Gospel relating to peace, pardon, justification, adoption, sanctification, and eternal life; and of the several doctrines of the Gospel, some will appear in their nature and use more excellent than others, more grand and sublime; such as concern the sovereign and distinguishing grace of God, the glory of Christ, and the salvation of the elect; some being milk for babes, others meat for strong men. And these being tried and proved, first by the word of God, and then by the experience of the saints, are to be approved above thousands of gold and silver, and esteemed more than our necessary food; even the sincere milk of the word, as it is by newborn babes, as well as the strong meat of it by the adult, and all to be highly valued and abode by, and held fast.

That ye may be sincere;
or "pure", as the Syriac version renders it; pure as the sun, discerned and judged by the light of it, as the word signifies, which discovers motes, faults, and flaws; in which, some think, is a metaphor taken either from the eagle, which holds up its young against the sun, and such as can bear the light of it she retains as her own, but such that cannot she rejects as a spurious brood; or from persons in business, who hold up the goods they are buying to the sun, to see if they can observe any fault in them: so such may be said to be sincere, or pure, who are pure in heart, life, and conversation, whose principles and practices will bear the test of light; such are sincere, who are like honey without wax, and fine flour without leaven, that have no mixture of corruption in doctrine, life, or manners; whose grace is genuine and right; whose faith is unfeigned; whose love to God, and Christ, and one another, is without dissimulation; whose hope is lively, and of a soul purifying nature, and is built on a good foundation; and whose repentance is attended with genuine effects, and proper fruits; whose principles are unmixed; who do not corrupt or adulterate the word of God, but desire and retain the sincere milk of it, and hold the mystery of the faith in a pure conscience; whose worship is also pure and spiritual, who worship God in spirit and truth, under the influence, and by the assistance of the Spirit of God, and with their whole hearts and spirits, and according to the truth of the Gospel; who keep the ordinances as they were delivered, without any human inventions, corruptions, and mixtures; who are sincere in their hearts, pure and sound in heart, simple, plain hearted, and single eyed; choose to be good, rather than seem to be so; whose desires after God, and divine things, and whose affections for them, are true and real, and proceed from the bottom of their hearts; and who have their conversation in the world by the grace of God, in simplicity and godly sincerity; and such the apostle wishes these saints to be, and adds,

and without offence until the day of Christ;
to God, as considered in the righteousness of Christ, in which they are perfectly without offence, and will always continue so; or in their walk and conversation before God, in which, though they may in many things offend, yet not be guilty of any notorious iniquity, and much less of living in it: and to themselves, to their own consciences, exercising a conscience void of offence towards God and men; acting according to that light they have received, and those principles they have embraced and professed; desiring to be kept from all evil, that it might not grieve and wound them; and doing nothing in things of an indifferent nature, with offence, or against the dictates of conscience, and to the violation of it: and also to others, to Jew or Gentile, to the world, or to the church of God, by avoiding every thing that is offensive to either; not good things, but evil ones, and those that are indifferent; that peace may be preserved, and their own good may not be evil spoken of; that the children of God may not be grieved, staggered, and stumbled, nor sinners hardened, or have any occasion to blaspheme. The phrase denotes an harmless life and conversation, and a continuance in it to the end, to the day of death, or coming of our Lord, which is to be loved, longed, wished, and looked for, and to be always had in view; and that to engage to a becoming life and conversation, with sincerity, and without offence, since in that day all hearts and actions will be exposed and laid open.