19 For Moses also besought for the sins of the people; and yet, when he had sought pardon for these sinners, he did not receive it. “I pray You,” said he, “O Lord, this people have sinned a great sin, and have made them gods of gold. Yet now, if You will forgive their sin, forgive it; but if not, blot me out of the book which You have written. And the Lord said unto Moses, Whosoever has sinned against me, him will I blot out of my book.” He, the friend of God; he who had often spoken face to face with the Lord, could not obtain what he asked, nor could appease the wrath of an indignant God by his entreaty.
God praises Jeremiah, and announces, saying, “Before I formed you in the belly, I knew you; and before you came out of the womb I sanctified you, and I ordained you a prophet unto the nations.” And to the same man He says, when he often entreated and prayed for the sins of the people, “Pray not for this people, neither lift up cry nor prayer for them; for I will not hear them in the time wherein they call on me, in the time of their affliction.” But who was more righteous than Noah, who, when the earth was filled with sins, was alone found righteous on the earth?
Who more glorious than Daniel? Who more strong for suffering martyrdom in firmness of faith, more happy in God's condescension, who so many times, both when he was in conflict conquered, and, when he had conquered, lived on? Was any more ready in good works than Job, braver in temptations, more patient in sufferings, more submissive in his fear, more true in his faith? And yet God said that He would not grant to them if they were to seek. When the prophet Ezekiel entreated for the sin of the people, “Whatsoever land,” said He, “shall sin against me by trespassing grievously, I will stretch out mine hand upon it, and will break the staff of bread thereof, and will send famine upon it, and will cut off man and beast from it.
Though these three men, Noah, Daniel, and Job, were in it, they should deliver neither sons nor daughters; but they only should be delivered themselves.” Thus, not everything that is asked is in the pre-judgment of the asker, but in the free will of the giver; neither can human judgment claim to itself or usurp anything, unless the divine pleasure approve.
Source: The Treatises of Cyprian (New Advent)