Midrasch zu Bereschit 29:5

R. Yose bar Chanina explained the verse about the exile, “And Jacob said tho them... and they said we are from Charan” (Genesis 29:4) We are running away from the rage of (charono) of the Holy One, blessed be He. “He said to them, 'Do you know Laban the son of Nahor?'…” (Genesis 29:5) Do you know who is going to whiten (lelaven) your iniquities like snow in the future? "And they said, 'we know'" (- as they never lost their hope). "And he said, 'Is there peace with him'; and they said, 'there is peace.'" In the merit of what? "And behold his daughter, Rachel, is coming with the flock." This is [the meaning of] that which is written (Jeremiah 31:15-17), "Rachel weeps for her children... Restrain your eyes form weeping... And there is hope for your future."