How was Moses a brilliant example of how to appoint a successor?

Origen asks all clergy to be humble, imitating Moses the archprophet who did not dare to choose a successor for himself, but instead asked God Himself to choose the fittest for this position:

“But for now let us consider the grandeur of Moses. When he was about to depart from the world, he prays to God to provide a leader for the people. What are you doing, O Moses? Are not Gershom and Eleazer your sons? Or, if you have some hesitations about them, does not your brother, a great and famous man, have sons? Why not pray to God for them, to have them appointed leaders of the people? But let the rulers of the churches learn not to ordain as their successors those who are linked to them by blood relation, nor those who are associated by proximity of the flesh. They should not transmit a hereditary rule in the church, but should defer to God's judgment and not select one whom human affection recommends. Instead let them allow the matter of the election of a successor be completely determined by God's judgment.

“Was Moses unable to choose a leader for the people, and to choose by a true judgment and by a fair and just decision … Who then was as capable of choosing a leader for the people as Moses? But he does not do it, he does not choose, he does not dare. Why does he not dare? So that he will not leave to posterity a presumptuous precedent. But listen to what he says: ‘May the Lord God of spirits and of all flesh provide a man over this congregation, who will go out before their face and who will go in, and who will lead them forth and lead them back’ (Num. 27:16–17). Thus, if a man of the stature and quality of Moses does not allow to his own judgment the selection of a leader of the people, the appointment of a successor, who will there be who would dare to do this, whether from the people, who often are accustomed

1643 Origen, The Commentary of Origen on the Gospel of St. Matthew. Vol. 1 , trans., Ronald E. Heine (Oxford, UK: Oxford University Press, 2018) 16:13: p. 252.

1644 Origen, The Commentary of Origen on the Gospel of St. Matthew. Vol. 1 , trans., Ronald E. Heine (Oxford, UK: Oxford University Press, 2018) 16.17: p. 258.

1645 Origen, Commentary on the Gospel of Matthew 14.12 (ANF 10:502).

to be stirred up by shouts for favors, or who perhaps are provoked by financial gain; or even from the priests themselves? Who will there be who would judge himself capable of doing this, unless it be revealed to someone who prays and asks the Lord?”¹⁶⁴⁶