1 Samuel 1:6

The word rival [aemulare] has a threefold meaning. First, it means to emulate [imitari], as in "Seek after the greater gifts." We also read, "It is good that you always be emulated for the good." Second, it is to envy [invidere], even one's enemy, as …

(Moral Exposition) Anna is afflicted by her rival, when immoderate attention to good work disturbs the quiet of inner vision. She is afflicted when she who is proved to be more noble is placed before her, and she is greatly distressed, because the contemplation of the elect mind is narrowed when he who desires to be in the contemplation of sublime things spreads himself too immoderately in the works of the active life. For to distress is to constrict. Indeed the vision of the mind is constricted when, impeded by the occupations of works, it is by no means expanded in that immensity of inner light. And because she is said to distress her greatly, it should be noted that immoderate concern for good work also harms contemplation not a little. For Peninnah greatly distresses Anna, because when the mind is immoderately devoted to the active life, it is very difficult for it, while it occupies itself with arranging earthly things, to rise powerfully in the vision of heavenly things. Peninnah also reproaches her as if barren, because while we quickly bring forth the fruit of good works from the active life, and cannot easily attain to the joys of inner contemplation, she appears barren while we, inexperienced, despair of her fruitfulness. Therefore while we love Peninnah for her fruitfulness, Anna is afflicted, distressed, and marked with the reproach of barrenness, because while we do not restrain the concern for good actions with the discretion we ought, we render the purity of contemplation so much more difficult for ourselves, inasmuch as we by no means retain the nobler life with excellent zeal. But because she has begun to ascend to higher things, if she is strong in her purpose, enduring such trials, she does not despair. […]

Her rival also afflicted her, etc. The Synagogue afflicted the Gentiles, reproaching them for being neglected by God due to their immense crimes, and for neither being able to merit the discourse of God nor the oracles of the prophets, by which the offspring of …

17. For the Lord closed the womb of Holy Church, because, rejected by His supreme judgment, it could not give birth to the Jewish people in the faith of our Redeemer. Her rival indeed afflicted her, because the synagogue raged against her with threats and reproaches. But she who had not been broken by either threats or insults was also subjected to punishment by torture. Rightly therefore she is said not only to afflict her but to distress her vehemently: because rejected Judea moved against the chosen Church with the terror of threats, and struck her with blows.

And her adversary also provoked her sore,....