וְאֵ֙לֶּה֙ תּוֹלְד֣וֹת פָּ֔רֶץ פֶּ֖רֶץ הוֹלִ֥יד אֶת־חֶצְרֽוֹן׃
Ito ang salaysay ni Perez: naging anak ni Perez si Hezron.
Otzar Midrashim
...And in Jonah it is written, "I would rather die than live." Jonah was the son of the woman of Zarfat. He had already died once, and knew that he would have rest, and Elijah did not die. And so he said, "am I not better than my ancestors?"
Bamidbar Rabbah
And these are the generations of Aaron and Moses on the day that God spoke to Moses on Mount Sinai (Numbers 3:1).
Anyone with whom the Omnipresent engages to establish a nation or a family tree from him, the Omnipresent would also engage with him to write generations in his regard, as you find twelve instances of generations in the verses. The first: “These are the generations of the heavens and the earth” (Genesis 2:4); “this is the book of the generations of Adam” (Genesis 5:1); “these are the generations of Noah” (Genesis 6:9); “these are the generations of the sons of Noah” (Genesis 10:1): “these are the generations of Shem” (Genesis 11:10); “these are the generations of Teraḥ” (Genesis 11:27); “these are the generations of Ishmael” (Genesis 25:12); “Isaac” (Genesis 25:19); “Esau” (Genesis 36:1); “Jacob” (Genesis 37:2). These are ten generations with which the Holy One blessed be He engaged to create the world and to establish nations. And there are two people that the Omnipresent wrote their generationst, one for the royal dynasty and one for the priestly dynasty: “These are the generations of Peretz” (Ruth 4:18), to establish the royal dynasty from him, and “these are the generations of Aaron and Moses"(Numbers 3:1), for the priestly dynasty.
Anyone with whom the Omnipresent engages to establish a nation or a family tree from him, the Omnipresent would also engage with him to write generations in his regard, as you find twelve instances of generations in the verses. The first: “These are the generations of the heavens and the earth” (Genesis 2:4); “this is the book of the generations of Adam” (Genesis 5:1); “these are the generations of Noah” (Genesis 6:9); “these are the generations of the sons of Noah” (Genesis 10:1): “these are the generations of Shem” (Genesis 11:10); “these are the generations of Teraḥ” (Genesis 11:27); “these are the generations of Ishmael” (Genesis 25:12); “Isaac” (Genesis 25:19); “Esau” (Genesis 36:1); “Jacob” (Genesis 37:2). These are ten generations with which the Holy One blessed be He engaged to create the world and to establish nations. And there are two people that the Omnipresent wrote their generationst, one for the royal dynasty and one for the priestly dynasty: “These are the generations of Peretz” (Ruth 4:18), to establish the royal dynasty from him, and “these are the generations of Aaron and Moses"(Numbers 3:1), for the priestly dynasty.
Midrash Tanchuma
These are the generations (Toledot) of the heaven and the earth when they were created (Gen. 2:4). R. Berechiah and R. Helbo said in the name of R. Samuel the son of Nahmani: The word toledot in Scripture lacks the letter vav in all but two verses. These verses are: These are the generations of Perez (Ruth 4:18) and the (verse quoted) above. (The full spelling of the word toledot, with the vav, is found only in these two instances.)