9:15 {11} For he saith to Moses, I will {o} have mercy on whom I will have mercy, and I will have {p} compassion on whom I will have compassion.
(11) He answers first with regard to those who are chosen to salvation, in the choosing of whom he denies that God may seem unjust, although he chooses and predestinates to salvation those that are not yet born, without any respect of worthiness: because he does not bring the chosen to the appointed end except by the means of his mercy, which is a cause discussed under predestination. Now mercy presupposes misery, and again, misery presupposes sin or voluntary corruption of mankind, and corruption presupposes a pure and perfect creation. Moreover, mercy is shown by her degrees: that is, by calling, by faith, by justification and sanctification, so that at length we come to glorification, as the apostle will show afterwards. Now all these things orderly following the purpose of God, do clearly prove that he can by no means seem unjust in loving and saving his.
(o) I will be merciful and favourable to whom I wish to be favourable.
(p) I will have compassion on whoever I wish to have compassion.
9:15 I will have mercy on whom I will have mercy. This is in answer to a request of Moses for a high privilege (Ex 33:19). The Lord grants it, not because he merits it, but of grace, because he will be gracious to whom he willeth, and will have mercy where he will. The passage, as applied by Paul, asserts that God favors nations according to his pleasure. He exercises free choice.
9:15 Ex 33:19.
9:14-24 Whatever God does, must be just. Wherein the holy, happy people of God differ from others, God's grace alone makes them differ. In this preventing, effectual, distinguishing grace, he acts as a benefactor, whose grace is his own. None have deserved it; so that those who are saved, must thank God only; and those who perish, must blame themselves only, Hos 13:9. God is bound no further than he has been pleased to bind himself by his own covenant and promise, which is his revealed will. And this is, that he will receive, and not cast out, those that come to Christ; but the drawing of souls in order to that coming, is an anticipating, distinguishing favour to whom he will. Why does he yet find fault? This is not an objection to be made by the creature against his Creator, by man against God. The truth, as it is in Jesus, abases man as nothing, as less than nothing, and advances God as sovereign Lord of all. Who art thou that art so foolish, so feeble, so unable to judge the Divine counsels? It becomes us to submit to him, not to reply against him. Would not men allow the infinite God the same sovereign right to manage the affairs of the creation, as the potter exercises in disposing of his clay, when of the same lump he makes one vessel to a more honourable, and one to a meaner use? God could do no wrong, however it might appear to men. God will make it appear that he hates sin. Also, he formed vessels filled with mercy. Sanctification is the preparation of the soul for glory. This is God's work. Sinners fit themselves for hell, but it is God who prepares saints for heaven; and all whom God designs for heaven hereafter, he fits for heaven now. Would we know who these vessels of mercy are? Those whom God has called; and these not of the Jews only, but of the Gentiles. Surely there can be no unrighteousness in any of these Divine dispensations. Nor in God's exercising long-suffering, patience, and forbearance towards sinners under increasing guilt, before he brings utter destruction upon them. The fault is in the hardened sinner himself. As to all who love and fear God, however such truths appear beyond their reason to fathom, yet they should keep silence before him. It is the Lord alone who made us to differ; we should adore his pardoning mercy and new-creating grace, and give diligence to make our calling and election sure.