Acharei Mot: Chapter 36
The seventy sounds of a woman in labor

The Faithful Shepherd, Moses, says that at the time before the coming of the Messiah, the sages of Kabbalah will have a time of hardship; they will be in distress, sadness and poverty like the pains of the one who has given birth, the Shechinah. At that time she will open to give birth to the two Messiahs, due to the pain of those people who are so good and kind and truthful, who love and fear God.