4:2-9 Let believers be of one mind, and ready to help each other. As the apostle had found the benefit of their assistance, he knew how comfortable it would be to his fellow-labourers to have the help of others. Let us seek to give assurance that our names are written in the book of life. Joy in God is of great consequence in the Christian life; and Christians need to be again and again called to it. It more than outweighs all causes for sorrow. Let their enemies perceive how moderate they were as to outward things, and how composedly they suffered loss and hardships. The day of judgment will soon arrive, with full redemption to believers, and destruction to ungodly men. There is a care of diligence which is our duty, and agrees with a wise forecast and due concern; but there is a care of fear and distrust, which is sin and folly, and only perplexes and distracts the mind. As a remedy against perplexing care, constant prayer is recommended. Not only stated times for prayer, but in every thing by prayer. We must join thanksgivings with prayers and supplications; not only seek supplies of good, but own the mercies we have received. God needs not to be told our wants or desires; he knows them better than we do; but he will have us show that we value the mercy, and feel our dependence on him. The peace of God, the comfortable sense of being reconciled to God, and having a part in his favour, and the hope of the heavenly blessedness, are a greater good than can be fully expressed. This peace will keep our hearts and minds through Christ Jesus; it will keep us from sinning under troubles, and from sinking under them; keep us calm and with inward satisfaction. Believers are to get and to keep a good name; a name for good things with God and good men. We should walk in all the ways of virtue, and abide therein; then, whether our praise is of men or not, it will be of God. The apostle is for an example. His doctrine and life agreed together. The way to have the God of peace with us, is to keep close to our duty. All our privileges and salvation arise in the free mercy of God; yet the enjoyment of them depends on our sincere and holy conduct. These are works of God, pertaining to God, and to him only are they to be ascribed, and to no other, neither men, words, nor deeds.
8. Summary of all his exhortations as to relative duties, whether as children or parents, husbands or wives, friends, neighbors, men in the intercourse of the world, &c.
true—sincere, in words.
honest—Old English for "seemly," namely, in action; literally, grave, dignified.
pure—"chaste," in relation to ourselves.
lovely—lovable (compare Mr 10:21; Lu 7:4, 5).
of good report—referring to the absent (Php 1:27); as "lovely" refers to what is lovable face to face.
if there be any virtue—"whatever virtue there is" [Alford]. "Virtue," the standing word in heathen ethics, is found once only in Paul's Epistles, and once in Peter's (2Pe 1:5); and this in uses different from those in heathen authors. It is a term rather earthly and human, as compared with the names of the spiritual graces which Christianity imparts; hence the rarity of its occurrence in the New Testament. Piety and true morality are inseparable. Piety is love with its face towards God; morality is love with its face towards man. Despise not anything that is good in itself; only let it keep its due place.
praise—whatever is praiseworthy; not that Christians should make man's praise their aim (compare Joh 12:43); but they should live so as to deserve men's praise.
think on—have a continual regard to, so as to "do" these things (Php 4:9) whenever the occasion arises.