וַיֹּ֨אמֶר יְהוָ֜ה לָ֗הּ שְׁנֵ֤י גיים [גוֹיִם֙] בְּבִטְנֵ֔ךְ וּשְׁנֵ֣י לְאֻמִּ֔ים מִמֵּעַ֖יִךְ יִפָּרֵ֑דוּ וּלְאֹם֙ מִלְאֹ֣ם יֶֽאֱמָ֔ץ וְרַ֖ב יַעֲבֹ֥ד צָעִֽיר׃
Respondeu-lhe o SENHOR: Duas nações há no teu ventre, e dois povos se dividirão das tuas estranhas, e um povo será mais forte do que o outro povo, e o mais velho servirá ao mais moço.
Rashi on Genesis
ויאמר ה' לה AND THE ETERNAL SAID UNTO HER through a messenger: it was told to Shem by holy inspiration and he told it to her (Genesis Rabbah 63:7).
Ramban on Genesis
TWO NATIONS ARE IN THY WOMB. The intent of this is that He informed her that she should not fear, for the reason that the struggle in her womb is that she is pregnant with twins, this being the customary way among women who are pregnant with twins.
It is possible that He is also saying that since they are destined to be two peoples, hating and warring with each other, at the very beginning of their creation they initiated a quarrel, thus intimating at the situation which will ultimately exist between them. But He assured her that now they will rest, and she will find rest and quiet for herself.
It is possible that He is also saying that since they are destined to be two peoples, hating and warring with each other, at the very beginning of their creation they initiated a quarrel, thus intimating at the situation which will ultimately exist between them. But He assured her that now they will rest, and she will find rest and quiet for herself.
Radak on Genesis
ויאמר ה' לה, by means of the prophet who was either Shem or Avraham.