וַיִּמְלְא֥וּ יָמֶ֖יהָ לָלֶ֑דֶת וְהִנֵּ֥ה תוֹמִ֖ם בְּבִטְנָֽהּ׃
Y como se cumplieron sus días para parir, he aquí mellizos en su vientre.
Targum Jonathan on Genesis
And the two hundred and seventy days of her being with child were completed to bring forth; and, behold, twins were in her womb.