4:10-19 It is a good work to succour and help a good minister in trouble. The nature of true Christian sympathy, is not only to feel concern for our friends in their troubles, but to do what we can to help them. The apostle was often in bonds, imprisonments, and necessities; but in all, he learned to be content, to bring his mind to his condition, and make the best of it. Pride, unbelief, vain hankering after something we have not got, and fickle disrelish of present things, make men discontented even under favourable circumstances. Let us pray for patient submission and hope when we are abased; for humility and a heavenly mind when exalted. It is a special grace to have an equal temper of mind always. And in a low state not to lose our comfort in God, nor distrust his providence, nor take any wrong course for our own supply. In a prosperous condition not to be proud, or secure, or worldly. This is a harder lesson than the other; for the temptations of fulness and prosperity are more than those of affliction and want. The apostle had no design to urge them to give more, but to encourage such kindness as will meet a glorious reward hereafter. Through Christ we have grace to do what is good, and through him we must expect the reward; and as we have all things by him, let us do all things for him, and to his glory.
19. my—Paul calls God here "my God," to imply that God would reward their bounty to His servant, by "fully supplying" (translate so, literally, fill to the full) their every "need" (2Co 9:8), even as they had "fully" supplied his "need" (Php 4:16, 18). My Master will fully repay you; I cannot. The Philippians invested their bounty well since it got them such a glorious return.
according to his riches—The measure of His supply to you will be the immeasurable "riches of His grace" (Eph 1:7).
in glory—These words belong to the whole sentence. "Glory" is the element in which His rich grace operates; and it will be the element IN which He will "supply fully all your need."
by Christ Jesus—by virtue of your being "IN" (so Greek, not "by") Christ Jesus, the Giver and Mediator of all spiritual blessings.