8 And how (you ask) is it possible that they should be denied, who have shown prophetic powers, and wrought miracles, and cast out demons? Is it probable they were afterwards changed, and became wicked; and therefore were nothing benefited, even by their former virtue. For not only ought we to have our beginnings splendid, but the end also more splendid still.
For tell me, does not the Orator take pains to make the end of his speech splendid, that he may retire with applause? Does not the public officer make the most splendid display at the close of his administration? The wrestler, if he do not make a more splendid display and conquer unto the end, and if after vanquishing all he be vanquished by the last, is not all unprofitable to him? Should the pilot have crossed the whole ocean, yet if he wreck his vessel at the port, has he not lost all his former labor? And what [of] the Physician? If, after he has freed the sick man from his disease, when he is on the point of discharging him cured, he should then destroy him, has he not destroyed everything? So too in respect of Virtue, as many as have not added an end suitable to the beginning, and in unison and harmony with it, are ruined, and undone. Such are they who have sprung forth from the starting place bright and exulting, and afterwards have become faint and feeble. Therefore they are both deprived of the prize, and are not acknowledged by their master.
Let us listen to these things, those of us who are in love of wealth: for this is the greatest iniquity. “For the love of money is the root of all evil.” Let us listen, those of us who wish to make our present possessions greater, let us listen and sometime cease from our covetousness, that we may not hear the same things as they [will hear]. Let us listen to them now, and be on our guard, that we may not hear them then. Let us listen now with fear, that we may not then listen with vengeance: “Depart from Me” (He says); “I never knew you”, no not even then (He means) when you made a display of prophesyings, and were casting out demons.
It is probable that He also here hints at something else, that even then they were wicked; and from the beginning, grace wrought even by the unworthy. For if it wrought through Balaam, much more through the unworthy, for the sake of those who shall profit [by it].
But if even signs and wonders did not avail to deliver from punishment; much more, if a man happen to be in the priestly dignity: even if he reach the highest honor, even if grace work in him to ordination, even if unto all the other things, for the sake of those who need his leadership, he also shall hear, “I never knew you,” no, not even then when grace wrought in you.
Source: Homilies on the Epistle to the Hebrews (New Advent)