9:21 Hath not the potter power over the clay - And much more hath not God power over his creatures, to appoint one vessel, namely, the believer, to honour, and another, the unbeliever, to dishonour? If we survey the right which God has over us, in a more general way, with regard to his intelligent creatures, God may be considered in two different views, as Creator, Proprietor, and Lord of all; or, as their moral Governor, and Judge. God, as sovereign Lord and Proprietor of all, dispenses his gifts or favours to his creatures with perfect wisdom, but by no rules or methods of proceeding that we are acquainted with. The time when we shall exist, the country where we shall live, our parents, our constitution of body and turn of mind; these, and numberless other circumstances, are doubtless ordered with perfect wisdom, but by rules that lie quite out of our sight. But God's methods of dealing with us, as our Governor and Judge, are dearly revealed and perfectly known; namely, that he will finally reward every man according to his works: He that believeth shalt be saved, and he that believeth not shall be damned. Therefore, though He hath mercy on whom he willeth, and whom he willeth he hardeneth, that is, suffers to be hardened in consequence of their obstinate wickedness; yet his is not the will of an arbitrary, capricious, or tyrannical being. He wills nothing but what is infinitely wise and good; and therefore his will is a most proper rule of judgment. He will show mercy, as he hath assured us, to none but true believers, nor harden any but such as obstinately refuse his mercy. Jer 18:6,7

Romans 9:21 Parallel Commentaries

It is Also Written, "But I Say unto You...
28. It is also written, "But I say unto you, Swear not at all." But the Apostle himself has used oaths in his Epistles. [2342] And so he shows how that is to be taken which is said, "I say unto you, Swear not at all:" that is, lest by swearing one come to a facility in swearing, from facility to a custom, and so from a custom there be a downfall into perjury. And therefore he is not found to have sworn except in writing, where there is more wary forethought, and no precipitate tongue withal. And …
St. Augustine—On Lying

Flee Away, My Beloved, and be Thou Like to a Roe or to a Young Hart Upon the Mountains of Spices.
The soul having now no other interest than that of the Bridegroom, either for self or for any other creature, and who can will nothing except His glory, seeing something which dishonors Him, cries out, Flee away, my Beloved! Leave these places which offer Thee no perfume. Come to those souls who are as mountains of spices, raised above the fetid vapors corrupted by the wickedness of this world. These mountains owe their sweetness to the odor of the exquisite virtues which Thou hast planted in them, …
Madame Guyon—Song of Songs of Solomon

Messiah's Innocence vindicated
He was taken from prison and from judgment, and who shall declare his generation? For he was cut off out of the land of the living; for the transgression of my people was he stricken. L et not plain Christians be stumbled because there are difficulties in the prophetical parts of the Scriptures, and because translators and expositors sometimes explain them with some difference, as to the sense. Whatever directly relates to our faith, practice, and comfort, may be plainly collected from innumerable …
John Newton—Messiah Vol. 1