And God remembered Rachel. Since with God nothing is either before or after, but all things are present, he is subject to no forgetfulness, so that, in the lapse of time, he should need to be reminded of what is past. But the Scripture describes the presence and memory of God from the effect produced upon ourselves, because we conceive him to be such as he appears to be by his acts. Moreover, whether Rachel's child was born the last of all, cannot with certainty be gathered from the words of Moses. They who, in this place, affirm that the figure hysteron proteron, which puts the last first, is used, are moved by the consideration, that if Joseph had been born after the last of his brethren, the age which Moses records in Genesis 41:46, would not accord with the fact. But they are deceived in this, that they reckon the nuptials of Rachel from the end of the second seven years; whereas it is certainly proved from the context, that although Jacob agreed to give his service for Rachel, yet he obtained her immediately; because from the beginning, the strife between the two sisters broke forth. Moses clearly intimates, in this place, that the blessing of God was bestowed late, when Rachel had despaired of issue, and had long been subject to reproach because of her barrenness. On account of this prosperous omen she gave the name Joseph [1] to her son, deriving the hope of two sons from the prospect of one [2]

Footnotes

1 - yvsph, (Yoseph,) he will add.

2 - "The Lord shall add to me another son." This may be regarded either as a prophecy respecting Benjamin, or as a prayer which was fulfilled when Benjamin was born. -- Ed.

And God hearkened to her - After the severe reproof which Rachel had received from her husband, Genesis 30:2, it appears that she sought God by prayer, and that he heard her; so that her prayer and faith obtained what her impatience and unbelief had prevented.

And God remembered Rachel,.... In a way of mercy and kindness, whom he seemed to have forgotten, by not giving her children:
and God hearkened to her; to her prayer, which had been made time after time, that she might have children; but hitherto God had delayed to answer, but now gives one:
and opened her womb; gave her conception, and made her fruitful, and she became the mother of a child she so much desired.

Birth of Joseph. - At length God gave Rachel also a son, whom she named Joseph, יוסף, i.e., taking away (= יאסף, cf. 1-Samuel 15:6; 2-Samuel 6:1; Psalm 104:29) and adding (from יסף), because his birth not only furnished an actual proof that God had removed the reproach of her childlessness, but also excited the wish, that Jehovah might add another son. The fulfilment of this wish is recorded in Genesis 35:16. The double derivation of the name, and the exchange of Elohim for Jehovah, may be explained, without the hypothesis of a double source, on the simple ground, that Rachel first of all looked back at the past, and, thinking of the earthly means that had been applied in vain for the purpose of obtaining a child, regarded the son as a gift of God. At the same time, the good fortune which had now come to her banished from her heart her envy of her sister (Genesis 30:1), and aroused belief in that God, who, as she had no doubt heard from her husband, had given Jacob such great promises; so that in giving the name, probably at the circumcision, she remembered Jehovah and prayed for another son from His covenant faithfulness.
After the birth of Joseph, Jacob asked Laban to send him away, with the wives and children for whom he had served him (Genesis 30:25). According to this, Joseph was born at the end of the 14 years of service that had been agreed upon, or seven years after Jacob had taken Leah and (a week later) Rachel as his wives (Genesis 29:21-28). Now if all the children, whose births are given in Genesis 29:32-30:24, had been born one after another during the period mentioned, not only would Leah have had seven children in 7, or literally 6 1/4 years, but there would have been a considerable interval also, during which Rachel's maid and her own gave birth to children. But this would have been impossible; and the text does not really state it. When we bear in mind that the imperf. c. ו consec. expresses not only the order of time, but the order of thought as well, it becomes apparent that in the history of the births, the intention to arrange them according to the mothers prevails over the chronological order, so that it by no means follows, that because the passage, "when Rachel saw that she bare Jacob no children," occurs after Leah is said to have had four sons, therefore it was not till after the birth of Leah's fourth child that Rachel became aware of her own barrenness. There is nothing on the part of the grammar to prevent our arranging the course of events thus. Leah's first four births followed as rapidly as possible one after the other, so that four sons were born in the first four years of the second period of Jacob's service. In the meantime, not necessarily after the birth of Leah's fourth child, Rachel, having discovered her own barrenness, had given her maid to Jacob; so that not only may Daniel have been born before Judah, but Naphtali also not long after him. The rapidity and regularity with which Leah had born her first four sons, would make her notice all the more quickly the cessation that took place; and jealousy of Rachel, as well as the success of the means she had adopted, would impel her to attempt in the same way to increase the number of her children. Moreover, Leah herself may have conceived again before the birth of her maid's second son, and may have given birth to her last two sons in the sixth and seventh years of their marriage. And contemporaneously with the birth of Leah's last son, or immediately afterwards, Rachel may have given birth to Joseph. In this way Jacob may easily have had eleven sons within seven years of his marriage. But with regard to the birth of Dinah, the expression "afterwards" (Genesis 30:21) seems to indicate, that she was not born during Jacob's years of service, but during the remaining six years of his stay with Laban.

God remembered Rachel, whom he seemed to have forgotten, and hearkened to her, whose prayers had been long denied, and then she bare a son. Rachael called her son Joseph, which, in Hebrew, is a - kin to two words of a contrary signification: Asaph, abstulit, he has taken away my reproach, as if the greatest mercy she had in this son were, that she had saved her credit: and Joseph, addidit, the Lord shall add to me another son: which may be looked upon as the language of her faith; she takes this mercy as an earnest of further mercy: hath God given me this grace? I may call it Joseph, and say, he shall add more grace.