1 When Mordecai perceived all that was done, Mordecai rent his clothes, and put on sackcloth with ashes, and went out into the midst of the city, and cried with a loud and a bitter cry; 2 And came even before the king's gate: for none might enter into the king's gate clothed with sackcloth. 3 And in every province, whithersoever the king's commandment and his decree came, there was great mourning among the Jews, and fasting, and weeping, and wailing; and many lay in sackcloth and ashes. 4 So Esther's maids and her chamberlains came and told it her. Then was the queen exceedingly grieved; and she sent raiment to clothe Mordecai, and to take away his sackcloth from him: but he received it not. 5 Then called Esther for Hatach, one of the king's chamberlains, whom he had appointed to attend upon her, and gave him a commandment to Mordecai, to know what it was, and why it was. 6 So Hatach went forth to Mordecai unto the street of the city, which was before the king's gate. 7 And Mordecai told him of all that had happened unto him, and of the sum of the money that Haman had promised to pay to the king's treasuries for the Jews, to destroy them. 8 Also he gave him the copy of the writing of the decree that was given at Shushan to destroy them, to shew it unto Esther, and to declare it unto her, and to charge her that she should go in unto the king, to make supplication unto him, and to make request before him for her people. 9 And Hatach came and told Esther the words of Mordecai. 10 Again Esther spake unto Hatach, and gave him commandment unto Mordecai; 11 All the king's servants, and the people of the king's provinces, do know, that whosoever, whether man or woman, shall come unto the king into the inner court, who is not called, there is one law of his to put him to death, except such to whom the king shall hold out the golden sceptre, that he may live: but I have not been called to come in unto the king these thirty days. 12 And they told to Mordecai Esther's words. 13 Then Mordecai commanded to answer Esther, Think not with thyself that thou shalt escape in the king's house, more than all the Jews. 14 For if thou altogether holdest thy peace at this time, then shall there enlargement and deliverance arise to the Jews from another place; but thou and thy father's house shall be destroyed: and who knoweth whether thou art come to the kingdom for such a time as this? 15 Then Esther bade them return Mordecai this answer, 16 Go, gather together all the Jews that are present in Shushan, and fast ye for me, and neither eat nor drink three days, night or day: I also and my maidens will fast likewise; and so will I go in unto the king, which is not according to the law: and if I perish, I perish. 17 So Mordecai went his way, and did according to all that Esther had commanded him.
[AD 856] Rabanus Maurus on Esther 4:1-4
When Mordecai heard about the destruction of the Jews which had been sanctioned with an imperial decree, he put on clothes for mourning and proceeded to the gates of the palace with bitterness in his soul and grief in his voice. In the same way, after the teachers of the church hear of the persecution which the princes of this world want to bring against the innocent servants of Christ, they come with their prayers and alms, with vigils and prayers, with tears and heavy hearts in view of what they know must happen. They give their all before the supreme judge, so that through the dignity and prayers of the true queen, namely, the holy church—which is still a stranger in this world even as it reigns in heaven together with the Lord—they might be heard by the king of the universe. If someone, then, should ask how it might be fitting to a most just king to inflict torments on the innocent, let him know that this is not the result of an evil decision, but of the command of a supreme will. Indeed divine wisdom—a wisdom which defeats every wickedness and leads things from beginning to end with its power, and perfectly arranges everything—does whatever it wants in heaven and on earth, in the sea, and in every abyss. The events that occur, occur fairly so that (God’s) faithful servant may be given into the hands of their persecutors both for the expiation of sin, and the correction of their habits … as the prophet testifies, “the Lord is just in all his ways, and kind in all his doings. The Lord is near to all who call on him.”

[AD 856] Rabanus Maurus on Esther 4:1-2
When Mordecai hears that the slaughter of the Jews has been fixed by imperial decree, he dresses himself in somber clothing and approaches the doors of the palace with a bitter soul and a wailing voice; and when the leaders of the Church hear about the persecution which the princes of the earth desire to inflict upon the blameless slaves of Christ, they long to pour out their troubles—with fasting and charity, with vigils and prayer, with tears and the devotion of the heart—to the hidden recesses of Heaven, i.e. in the sight of the supreme judge. So in light of the honor and the prayers of the true queen, i.e. the holy Church which even now wanders the earth for some of the time, and rules with the Lord in Heaven for the rest, they deserve to be heard by the king of all ages. If, moreover, one were to ask how it might befit a just king to inflict torments on the innocent, he should know that the source of this is not some desire to do harm but the intention of the highest providence; for the divine wisdom—which conquers every sort of wickedness and reaches powerfully from one end to the other, and disposes everything with ease—does whatever it wishes in Heaven and on earth, on the sea and in all the depths. It is, in other words, with just judgment that his faithful servants are delivered into the hands of the persecutors, whether to expiate their sins or to correct their behavior or even to add to their merits or multiply their rewards, since— as the prophet testifies—“the Lord is just in all his ways, and holy in all his acts; he is close to all who call upon him” (Psalms 145). In truth, he will do the will of those who fear him, and will listen to their prayers and bring them salvation; for the Lord did not deliver Job into Satan’s hands to destroy him because he asked him to, but so that with Job’s help he could defeat his most wicked enemy and so acquire for himself the palm of victory, and leave to that enemy the just punishment for his wickedness. The apostle Paul was subjected to a corporal goad, namely the angel of Satan, who pummeled him so that his virtue would be perfected in a state of weakness. We should also be careful not to pass over in silence the statement that Mordecai could not enter the royal court because he had put on sackcloth, but instead got as far as the doors of the palace; because no one who has been polluted by the life of this world may enter the court of the heavenly realm, rather each of us should, before the last day of his life, knock on the entrance of the kingdom by chastising his body and repenting in his heart for as long as he is here. And this way, he will be fortunate to enter the paradise of the Lord after he has passed into death.

[AD 99] Clement of Rome on Esther 4:5-17
Many women, fortified by the grace of God, have accomplished many heroic actions. The blessed Judith, when the city was besieged, asked permission of the elders to be allowed to go into the foreigners’ camp. By exposing herself to danger she went out for love of her country and of the people who were besieged, and the Lord delivered Holophernes into the hand of a woman. To no less danger did Esther, who was perfect in faith, expose herself, in order to save the twelve tribes of Israel that were to be destroyed. For by fasting and humiliation she begged the all-seeing Master of the ages, and he, seeing the meekness of her soul, rescued the people for whose sake she had faced danger.

[AD 253] Origen of Alexandria on Esther 4:5-17
But what use is there to recall all the examples of those who, because they prayed as they ought, received great favours from God? Everyone can choose for himself many examples from the Scriptures. Anna obtained the birth of Samuel, who was reckoned with Moses, because when she was barren she prayed to the Lord with faith. And Ezechias, being still childless and having learned from Isaias that he was about to die, prayed and was included in genealogy of the Saviour. Again, when, as a result of a single order arising from the intrigues of Aman, the people were about to be destroyed, the prayer and fasting of Mardochai and Esther were heard, and hence there arose, in addition to the feasts ordained by Moses, the festival of Mardochai for the people.

[AD 397] Ambrose of Milan on Esther 4:5-17
Why did Queen Esther expose herself to death and not fear the wrath of a fierce king? Was it not to save her people from death, an act both seemly and virtuous? The king of Persia himself also, though fierce and proud, yet thought it seemly to show honor to the man who had given information about a plot that had been laid against himself, to save a free people from slavery, to snatch them from death and not to spare him who had pressed on such unseemly plans. So finally he handed over to the gallows the man who stood second to himself and whom he counted chief among all his friends, because he considered that he had dishonored him with his false counsels. For that commendable friendship that maintains virtue is to be preferred most certainly to wealth, or honors or power. It is not accustomed to be preferred to virtue indeed, but to follow after it. So it was with Jonathan, who for his affection’s sake avoided not his father’s displeasure or the danger to his own safety. So, too, it was with Ahimelech, who, to preserve the duties of hospitality, though he must endure death rather than betray his friends when fleeing.

[AD 856] Rabanus Maurus on Esther 4:15-16
Mordecai prays with the Jews on behalf of Queen Esther, and the queen likewise prays for Mordecai and the Jews, because a teacher ought to offer prayers to the Lord on behalf of his students, and students on behalf of their teachers, that the entire community of the faithful—i.e. the limbs along with the whole body—may be kept whole through the kindness of Heaven. This explains why, when Paul writes to the Romans, he tells them that he constantly mentions them in his prayers; and he also makes these same Romans swear on the Lord Jesus Christ, and on the charity of the Holy Spirit, that they would help him in their prayers and pray for him to the Lord that he might be freed from the faithless who were in Judea, and that his ministry—which he was bringing to Jerusalem—might be acceptable to the saints. So too is it written in the Acts of the Apostles that when Peter was thrown in jail, the Church prayed constantly to the Lord on his behalf; and he himself likewise asks in his letter that the grace of God, and the peace of the Church, may be multiplied and fulfilled in the knowledge of our Lord Jesus Christ.