Komentaryong Sumisipi para sa Mga Kawikaan 27:1

ואלה תולדות, a reference to developments in the clan started by Esau, both in people, possessions and political influence. The word תולדות in this context is analogous to “מה ילד היום,” “what the day brings.” (Proverbs 27,1)

ותצא דינה בת לאה, “Dinah, Leah’s daughter went out, etc.” What happened to Dinah was a punishment for Yaakov for several misdemeanours. Firstly, he had said to Lavan (30,33) “let my integrity testify for me in the future.” Secondly, he was punished for denying Esau a glimpse of Dinah, for maybe she could have exercised a beneficial influence on him if he had married her. Thirdly, he was arrogant in assuming authority on earth as indicated by the name he gave the altar. According to Bereshit Rabbah, G’d told him: “never praise yourself with something that is in the future.” You have said: “let my integrity testify for me in the future. Tomorrow your daughter will leave her house and she will be raped.” [The implication is that if he had seen to it that she was properly chaperoned this could not have happened. Ed.]

אלה תולדות יעקב, the meaning of the word תולדות in our context here is “happenings, developments.” It includes all kinds of traumas Yaakov would experience. Genesis 6,9 similarly introduced what happened to Noach with these words. The philological bridge to the word תולדות when it refers to biological progeny is Proverbs 27,1 כי לא תדע מה ילד היום, “for you do not know what the day will give birth to.”