Proverbs 20:8

“This,” says he, “is another text of theirs: ‘Who will boast that he has a pure heart?’” And then he answered this with several passages, wishing to show that there can be in man a pure heart. But he omits to inform us how the passage which he reported as quoted against himself must be taken, so as to prevent Holy Scripture seeming to be opposed to itself in this text, and in the passages by which he makes his answer. We for our part indeed tell him, in answer, that the clause, “Who will boast that he has a pure heart?” is a suitable sequel to the preceding sentence, “whenever a righteous king sits upon the throne.” For how great soever ever a man’s righteousness may be, he ought to reflect and think, lest there should be found something blameworthy, which has escaped indeed his own notice, when that righteous King shall sit upon His throne, whose cognizance no sins can possibly escape, …

For the Holy Scripture testifies that God’s mercy is then also necessary for them, when the Saint says to his soul concerning the Lord its God, “Who crowneth thee in mercy and compassion.” The Apostle James also says: “He shall have judgment without mercy who hath showed no mercy;” where he sets forth that even in that judgment in which the righteous are crowned and the unrighteous are condemned, some will be judged with mercy, others without mercy. On which account also the mother of the Maccabees says to her son, “That in that mercy I may receive thee with thy brethren.” “For when a righteous king,” as it is written, “shall sit on the throne, no evil thing shall oppose itself to him. …

8. Since, then, every one that committeth sin is the servant of sin, listen to what is our hope of liberty. “And the servant,” He says, “abideth not in the house for ever.” The church is the house, the servant is the sinner. Many sinners enter the church. Accordingly He has not said, “The servant” is not in the house, but “abideth not in the house for ever.” If, then, there shall be no servant there, who will be there? For “when” as the Scripture speaketh, “the righteous king sitteth on the throne, who will boast of having a clean heart? or who will boast that he is pure from his sin?” He has greatly alarmed us, my brethren, by saying, “The servant abideth not in the house for ever.” But He further adds, “But the Son abideth ever.” Will Christ, then, be alone in His house? Will no people remain at His side? Whose head will He be, if there shall be no body? Or is the Son all this, both th …