1 Samuel 2:1 - Wesley's Explanatory Notes

Prayed — That is, praised God; which is a part of prayer. Rejoiceth — Or, leapeth for joy: for the words note not only inward joy, but also the outward demonstrations of it. In the Lord — As the author of my joy, that he hath heard my prayer, and accepted my son for his service. Horn — My strength and glory (which are often signified by an horn,) are advanced and manifested to my vindication, and the confusion of mine enemies. Mouth enlarged — That is, opened wide to pour forth abundant praises to God, and to give a full answer to all the reproaches of mine adversaries. Enemies — So she manifests her prudence and modesty, in not naming Peninnah, but only her enemies in the general. Salvation — Because the matter of my joy is no trivial thing, but that strange and glorious salvation or deliverance which thou hast given me from my oppressing care and grief, and from the insolencies and reproaches of mine enemies.