Genesis 35:18

Ben-oni... Benjamin. — Rachel, in her dying moments, names her child the son of my sorrow; for though on has a double meaning, and is translated strength in Genesis 49:3, yet, doubtless, her feeling was that the life of her offspring was purchased by her own pain and death. Jacob’s name, “son of the right hand,” was probably given not merely that the child might-bear no ill-omened title, but to mark his sense of the value and preciousness of his last born son. Abravanel well remarks that earthly happiness is never perfect, and that the receiving of Divine revelations made no difference to Jacob’s earthly lot. God had just solemnly appeared to him, and he is on his last journey, within two days’ easy march of Hebron, when he loses the wife whom he so loved. For more than forty years he had been an exile from his home; he was now close to it, but may never welcome there the one for whom he had so deep and lasting an affection.