1 Samuel 3:4

For Eli was sleeping with his sons inside the temple, and when the Lord desired to speak with the children of men, He forsook the old age which was trained in wisdom and exercised in the affairs of the world, and lusty manhood which had …

And therefore by no means let the ignorance or shallowness of one old man or of a few deter you and cut you off from that salutary path about which we have spoken and from the traditions of our forebears. The clever enemy misuses their gray hairs to deceive the young. But everything should be revealed to the elders without any obfuscating embarrassment, and from them one may confidently receive both healing for one's wounds and examples for one's way of life. Thanks to them we shall experience the same assistance and a like result if we strive to aim at nothing whatsoever by our own judgment and presumption.Finally, it is evident that this understanding is greatly pleasing to God, for not without reason do we find this same instruction even in holy Scripture. Thus, the Lord did not desire of himself to teach the boy Samuel through divine speech, once he had been chosen by his own decision, but he was obliged to return twice to the old man. He willed that one whom he was calling to an intimate relationship with himself should even be instructed by a person who had offended God, because he was an old man. And he desired that one whom he judged most worthy to be selected by himself should be reared by an old man so that the humility of him who was called to a divine ministry might be tested and so that the pattern of this subjection might be offered as an example to young men.

9. For to call is to rouse through the force of a greater grace. For the Lord calls one who is sleeping, because He stirs up those who are resting from earthly pursuits to an increase of heavenly knowledge. For while we keep watch through concern for outward things, we do not perceive what is inward and spiritual. The setting aside of earthly care, therefore, is our preparation for receiving heavenly grace, because in the elect the outpouring of the divine gift becomes more abundant in proportion as the mind has been purer through the keeping of interior meditation. There follows: (Verses 4–9.) And the Lord called Samuel. Who answering, said: Here I am, and he ran to Eli and said: For you called me. Who said: I did not call you, my son; go back and sleep. And he went away and slept. And the Lord again called Samuel once more. And rising up, he went to Eli and said: Here I am, for you called me. Who answered: I did not call you, my son; go back and sleep. Now Samuel did not yet know the Lord, nor had the word of the Lord been revealed to him. And the Lord called Samuel again a third time. Who rising up, went to Eli and said: Here I am, for you called me. Eli therefore understood that the Lord was calling the boy, and he said to Samuel: Go and sleep, and if He calls you henceforth, you shall say: Speak, Lord, for your servant is listening. 10. What is it then that almighty God introduces his calling with such skill that the mind of the one called is restrained from recognizing the one who calls him; that hearing God, he thinks this master is a man; that he sends forth the calling yet conceals the cause; that he allows him to go to his master, to return so many times to the quiet of sleep, and yet does not permit the sleeper to rest? […]

And the Lord called Samuel, etc. It's a challenging mode of speaking, how from time to time a father calls his son to know the secrets of his judgment; and he responds that he is present, who was born before time from the Father and …

(Verses 4, 5.) Who answering, said: "Here I am." And he ran to Eli and said: "For you called me." Who said: "I did not call you, my son; return and sleep." 8. Why did the one who heard the Lord calling him run to Eli, unless because he thought he had been called by Eli? And since we are following the order of typological explanation, how is Eli considered to be the one speaking when God speaks to the boy who was called?