1 Samuel 2:4 - Joseph Benson’s Commentary on the Old and New Testaments

The bows of the mighty are broken The strength of which they boasted. They that stumbled Or, were weak and feeble. The great sense she had of God's power, branches out itself into an humble acknowledgment of this glorious attribute, in divers instances. And, first, in vanquishing the most victorious; for bows were a principal part of warriors' weapons, Psalms 44:6; and their girdles, being an important part of the military habit, are elegantly interpreted to signify strength and warlike prowess.