1 Samuel 10:21

34. He made them all stand by tribes and families, so that he might consider them all, and having considered all, might choose the more suitable one. But since he himself had already known the king by the Lord's revelation, and had anointed him as ruler at His command, why is it that he is still sought out as one to be chosen through tribes and families? But the king had been found by the prophet alone. Therefore, the one already found is sought, so that he who had not been found by the people might be found by them. He is also sought by lot, so that the people could not doubt that the one whom the prophet chose had been provided by divine dispensation. What then is signified in this event, if not that the rulers of the holy Church must be chosen with great deliberation? For the highest preachers, from the interior grace of the Holy Spirit which they possess, are full of the great light of providence. And because they are deeply humble, they do not presume upon the greatness of their inner illumination. Therefore, what they rightly determine within themselves, they also test before others. For the prophet alone knows the future king, when the supreme ruler of the holy Church perceives the character and merits of the one to be ordained as ruler. He also anoints him as ruler when he declares him to be full of spiritual gifts. Nevertheless, he still convenes the people, divides them by tribes and kindreds, casts lots, and finds, as if by a method, the one whom he already knows. The tribes and families stand, as it were, divided, when in the state of virtues the diverse orders of the holy Church are examined. For when we behold the many perfections of the elect—when we see the purity of virgins, the strength of the continent, the honorable ministries of clerics, the devotion of monks—we observe, as it were, tribes standing before us. And because there is great variety among these in the service of God, when we likewise observe the varieties that exist within each order, we see standing before us not only tribes, as it were, but also kindreds. And the lot falls upon a tribe, because better men are often found in one order than in another. For a tribe receives, as it were, the lot, when those who are more perfect than others are seen to be suited for the ministry of preaching. But the lot does not yet fall upon a person, but upon a tribe, when there are many among whom a worthy person lies hidden. Thus there still remains something for the highest men to investigate. Rightly, therefore, the lot is said to have fallen upon the tribe of Benjamin, and Samuel is said to have brought forward that tribe and its kindreds and to have arrived at the son of Kish, because the elect and highest men of the holy Church do not cease to consider the virtues of each individual until they arrive at the one who is found worthy of the lot of pastoral ministry. But those who are worthy are vehemently terrified to take up the burden of so great an office.