1 Samuel 2:21

But since Samuel is first said to have been girded with a linen ephod, and then the mother's fruitfulness in the multitude of children can reasonably be understood as what we observe happening daily—namely, that from the good reputation of a chosen disciple, the gains of converts increase for the master. Hence after the birth of brothers and sisters, Samuel is said to have been magnified before the Lord, because indeed those are already great before the Lord who through the examples of their devout way of life turn the hearts of their neighbors to the service of almighty God.

The Lord therefore enriched Anna, etc. The Lord gave to the Church the Spirit of His grace, by which it, being fruitful, bore for Him spiritual offspring, partly to search out or preach the mysteries of the Holy Trinity powerfully, partly with perfect love of …

13. By the three sons are designated all the more perfect members of the holy Church, who are known to have always done mighty deeds for the faith of the Trinity. But if the holy Church were to bring forth only the perfect, our weakness could not attain the rewards of eternal life. Therefore the frailty of the two daughters follows the strength of the sons, because although the holy Church has brought forth strong ones against the proud enemy of the human race, nevertheless even her weak members are led to the joys of the eternal homeland through the two precepts of charity. And because whoever had at that time begun to be trained for the priestly ministry did not always remain in the initial stages of his beginning, there follows: (Verse 21.) And the boy Samuel grew great in the sight of the Lord. 14. In this passage it is very much to be noted that the boy Samuel is said to have been both a boy and magnified. But when he is declared to be magnified, this praise of his virtue is said to have been held not in the sight of men, but in the sight of the Lord. Why then is he called a boy, unless because he had been raised to the height of perfection? Samuel is therefore called both a boy and magnified in the sight of the Lord, because the new order of preachers, even if it has attained to the height of great conduct, has not lost the virtue of its humility. Indeed, to be magnified before God would be of no profit if one ceased to be a boy, because having lost humility, one would be unable to please almighty God by the loftiness of one's conduct. For they had already been magnified who were casting out demons from the possessed in the name of Jesus; but because they had lost the good of their childhood, the Truth rebuked them, saying: "I saw Satan falling like lightning from heaven" (Luke 10:18). […]

And the Lord visited Hannah,.... In a way of mercy, approving and confirming the blessing of Eli; or rather granting the blessing he prayed for, by giving her power to conceive, bear, and bring forth children, as the following words explain it: so that she conceived and bare three sons and two daughters; whereby the prophecy of Hannah was fulfilled, 1Sa 2:5, and was no doubt matter of great joy to her, though of these children we nowhere else read, nor even of their names.

Peninnah is now mortified and crest-fallen. The tradition of the Jews is that when Hannah bore one child Peninnah buried two. There are many instances both of the increase of families that were inconsiderable and the extinguishing of families that made a figure, Job xxii.