ייִדישער מחשבֿה אויף ירמיהו 31:15

We find a Midrash Tanchuma on Parshat Beshalach section twenty, which states that expounding and interpreting Torah has been granted only to those who ate manna and those who live on tithes. It is clear that the meaning is that only people who do not have to worry about providing a livelihood for themselves and their families, can take out sufficient time to immerse themselves deeply in the study of Torah. Since the generation of Jews who came out of Egypt had no need to work for a living, they qualified for the task of Torah study in depth. In fact, that generation was immune from all the four impediments normal people face in their quest for G'd and His Torah.

Who were these companions? They were merely two, and these were they: Rachel, who taught her to cry; and Miriam who taught her timbral and dances. "Rachel taught her to cry" as it is written "Rachel is weeping for her children...for they are gone." (Jeremiah 31:15) and about Bat Yiftach it is said "And weep for my virginity." "Miriam taught her timbral and dances" as it is written "and all the women went out after her in dance with hand-drums" (Exodus 15:20). "All the women" including those who were not in the same generation. And about Bat Yiftach it is said "there was his daughter coming out to meet him, with timbrel and dance!" (Judges 11:34)

The Holy Blessed One said to her: "Hold back your voice from weeping and your eyes from tears" (Yirmiyahu 31:15). "Your voice from weeping" about the children in exile, "and your eyes from tears" about the mamzeirim, for about their tears it is said "And behold the tear of the oppressed" (Kohelet 4:1). "For there is reward for your action, says God, and they will return from the land of the enemy" (Yirmiyahu 31:15) - these are the children who return from exile. "And there is hope for your end, says God, and children will return to their borders" (Yirmiyahu 31:16) -- these are the mamzeirim, who will in the future return to enter the community of God.