Verse 9. Let the brother of low degree. This verse seems to introduce a new topic, which has no other connexion with what precedes than that the apostle is discussing the general subject of trials. Compare Jas 1:2. Turning from the consideration of trials in general, he passes to the consideration of a particular kind of trials, that which results from a change of circumstances in life, from poverty to affluence, and from affluence to poverty. The idea which seems to have been in the mind of the apostle is, that there is a great and important trial of faith in any reverse of circumstances; a trial in being elevated from poverty to riches, or in being depressed from a state of affluence to want. Wherever change occurs in the external circumstances of life, there a man's religion is put to the test, and there he should feel that God is trying the reality, of his faith. The phrase "of low degree" (tapeinov) means one in humble circumstances; one of lowly rank or employment; one in a condition of dependence or poverty. It stands here particularly opposed to one who is rich; and the apostle doubtless had his eye, in the use of this word, on those who had been poor.

Rejoice. Margin, glory. Not because, being made rich, he has the means of sensual gratification and indulgence; not because he will now be regarded as a rich man, and will feel that he is above want; not even because he will have the means of doing good to others. Neither of these was the idea in the mind of the apostle; but it was, that the poor man that is made rich should rejoice because his faith and the reality of his religion are now tried; because a test is furnished which will show, in the new circumstances in which he is placed, whether his piety is genuine. In fact, there is almost no trial of religion which is more certain and decisive than that furnished by a sudden transition from poverty to affluence, from adversity to prosperity, from sickness to health. There is much religion in the world that will bear the ills of poverty, sickness, and persecution, or that will bear the temptations arising from prosperity, and even affluence, which will not bear the transition from one to the other; as there is many a human frame that could become accustomed to bear either the steady heat of the equator, or the intense cold of the north, that could not bear a rapid transition from the one to the other. See Barnes on "Php 4:12".

In that he is exalted. A good man might rejoice in such a transition, because it would furnish him the means of being more extensively useful; most persons would rejoice because such a condition is that for which men commonly aim, and because it would furnish them the means of display, of sensual gratification, or of ease; but neither of these is the idea of the apostle. The thing in which we are to rejoice in the transitions of life is, that a test is furnished of our piety; that a trial is applied to it which enables us to determine whether it is genuine. The most important thing conceivable for us is to know whether we are true Christians, and we should rejoice in everything that will enable us to settle this point.

{1} "rejoice" or, "glory"