בְּיָמָיו֙ פָּשַׁ֣ע אֱד֔וֹם מִתַּ֖חַת יַד־יְהוּדָ֑ה וַיַּמְלִ֥כוּ עֲלֵיהֶ֖ם מֶֽלֶךְ׃
Pada zamannya Edom memberontak melepaskan diri dari kekuasaan Yehuda, lalu mereka mengangkat seorang raja atas diri mereka.
Rashi
’ואלה המלכים וגו AND THESE ARE THE KINGS etc. — There were eight and Jacob raised an equal number in whose days the kingdom of Esau temporarily ceased to exist, viz., Saul, Ishbosheth, David, Solomon, Rehoboam, Asa, Abiah and Jehoshaphat. For of the days of Yoram his (Jehoshaphat’s) son it is written, (2 Kings 8:20) “In his days Edom revolted from under the hand of Judah and made a king over themselves”, whereas in the days of Jehoshaphat it is written, (1 Kings 22:48) “And there was no king in Edom: a deputy was king”.
Chizkuni
כאשר תריד, an unusual expression, similar to Psalms 55,3: אריד בשמחי, “I am complaining;” Yitzchok assures him that if in the future the descendants of his brother will oppress those of Esau so that they will complain to Him, they will be able to shake off the yoke of the Israelites, i.e. ופרקת עולו. It is best for him to find himself another land in which to live so that he will never be exposed to subjugation by Yaakov’s descendants. [Esau chose to do so from his own free will, as we know from Genesis 36,68. Ed.] An alternative exegesis for the words: כאשר תריד. The root is ירד to descend, (compare Numbers 24,19, Bileam’s blessings) וירד מיעקב, “when you rule then you will shake off his yoke.” We find that history proved Bileam correct when we read in Kings II 8,20, that during the rule of Yoram, son of Achav, the Edomites rebelled against his rule. They proceeded to set up a state of their own by crowning a king.