But, as I said, if we be active also ourselves, the prayers for us avail too. Hear Paul saying, “For I know that this shall turn to my salvation, through your supplication, and the supply of the Spirit of Jesus Christ.” And again, “That for the gift bestowed upon us by means of many, thanks may be given by many persons on our behalf.” And you say, what need have I of prayer? But if we be idle, no one will be able to profit us. What did Jeremiah profit the Jews? Did he not thrice draw near to God, and the third time hear, “Pray not thou for this people, neither lift up cry nor prayer, for I will not hear you”? What did Samuel profit Saul? Did he not mourn for him even to his last day, and not merely pray for him only? What did he profit the Israelites? Did he not say, “God forbid that I should sin in ceasing to pray for you”? Did they not all perish? Do prayers then, you say, profit nothing? They profit even greatly: but it is when we also do something. For prayers indeed coöperate and assist, but a man coöperates with one that is operating, and assists one that is himself also working. But if you remain idle, you will receive no great benefit.
For if prayers had power to bring us to the kingdom while we do nothing, why do not all the Greeks become Christians? Do we not pray for all the world? Did not Paul also do this? Do we not intreat that all may be converted? Why do not the wicked become good without contributing anything of themselves? Prayers, then, profit greatly, when we also contribute our own parts.
Would you learn how much prayers have profited? Consider, I pray, Cornelius, Tabitha. Hear also Jacob saying to Laban, “Except the Fear of my father had been with me, surely you had now sent me away empty.” Hear also God again, saying, “I will defend this city for My own sake, and for My servant David's sake.” But when? In the time of Hezekiah, who was righteous. Since if prayers availed even for the extremely wicked, why did not God say this also when Nebuchadnezzar came, and why did He give up the city? Because wickedness availed more. Again, Samuel himself also prayed for the Israelites, and prevailed. But when? When they also pleased God, then they put their enemies to flight. And what need, you say, of prayer from another, when I myself please God? Never, O man, say this. There is need, aye, and need of much prayer. For hear God saying concerning the friends of Job; “And he shall pray for you, and your sin shall be forgiven you.” Because they had sinned indeed, but not a great sin. But this just man, who then saved his friends by prayer, in the season of the Jews was not able to save the Jews who were perishing. And that you may learn this, hear God saying through the prophet; “If Noah, Daniel, and Job stood, they shall not deliver their sons and their daughters.” Because wickedness prevailed. And again, “Though Moses and Samuel stood.”
And see how this is said to the two Prophets, because both prayed for them, and did not prevail. For Ezekiel says, “Ah Lord, do you blot out the residue of Israel?” Then showing that He does this justly, He shows him their sins; and showing that not through despising him does He refuse to accept his supplication for them, he says, Even these things are enough even to persuade you, that not despising you, but on account of their many sins, I do not accept your supplication. Nevertheless He adds, “Though. Noah, Job, and Daniel stood.” And with good reason does He the rather say this to him, because it is he who suffered so many things. Thou badest me, he says, eat upon dung, and I ate upon it. Thou badest me, and I shaved my head. Thou badest me, and I lay upon one side. Thou badest me go out through a hole in the wall, bearing a burden, and I went out. Thou tookest away my wife, and badest me not mourn, and I did not mourn, but bore it with fortitude. Ten thousand other things have I wrought for their sake: I entreat for them, and dost Thou not comply? Not from despising you, says he, do I do this, but though Noah, Job, and Daniel were there, and were entreating for sons and daughters, I would not comply.
And again to Jeremiah, who suffered less from the commandments of God, but more from their wickedness, what does He say? “Do you see not what these do?” “Yea,” he says, “they do so— but do Thou do it for my sake.” On this account He says to him, “Though Moses and Samuel stood.” Their first lawgiver, who often delivered them from dangers, who had said, “If now you forgive their sins, forgive it; but if not, blot me out also.” If therefore he were now alive, and spoke thus, he would not have prevailed—nor would Samuel, again, who himself also delivered them, and who from his earliest youth was admired. For to the former indeed I said, that I conversed with him as a friend with a friend, and not by dark sayings. And of the latter I said, that in his first youth I was revealed to him, and that on his account, being prevailed upon, I opened the prophecy that had been shut up. For “the word of the Lord,” it is said, “was precious in those days; there was no open vision.” If these men, therefore, stood before Me, they would profit nothing. And of Noah He says, “Noah was a righteous man, and perfect in his generations.” And concerning Job, He was “blameless, just, true, fearing God.” And concerning Daniel, whom they even thought a God; and they will not deliver, says he, their sons and daughters. Knowing these things, therefore, let us neither despise the prayers of the Saints, nor throw everything upon them: that we may not, on the one hand, be indolent and live carelessly; nor on the other deprive ourselves of a great advantage. But let us both beseech them to pray and lift up the hand for us, and let us adhere to virtue; that we may be able to obtain the blessings promised to those who love Him by the grace and loving-kindness of our Lord Jesus Christ, with whom, etc.
Source: Homilies on First Thessalonians (New Advent)