The Talmud derives from the verse 'go to the judge who will be in those days' that one must follow the sages of one's own generation, even if they are lesser than earlier authorities — 'Yiftach in his generation is like Shmuel in his generation.'
כְּתִיב: ״וָאֲצַוֶּה אֶת שֹׁפְטֵיכֶם בָּעֵת הַהִיא״, וּכְתִיב: ״וָאֲצַוֶּה אֶתְכֶם בָּעֵת הַהִיא״. אָמַר רַבִּי אֶלְעָזָר אָמַר רַבִּי שִׂמְלַאי: אַזְהָרָה לַצִּיבּוּר שֶׁתְּהֵא אֵימַת דַּיָּין עֲלֵיהֶן, וְאַזְהָרָה לַדַּיָּין שֶׁיִּסְבּוֹל אֶת הַצִּיבּוּר. עַד כַּמָּה? אָמַר רַבִּי חָנָן, וְאִיתֵּימָא רַבִּי שַׁבְּתַאי: ״כַּאֲשֶׁר יִשָּׂא הָאֹמֵן אֶת הַיֹּנֵק״. כְּתִיב: ״כִּי אַתָּה תָּבוֹא״, וּכְתִיב: ״כִּי אַתָּה תָּבִיא״. אָמַר רַבִּי יוֹחָנָן: אָמַר לוֹ מֹשֶׁה לִיהוֹשֻׁעַ: אַתָּה וְהַזְּקֵנִים שֶׁבַּדּוֹר עִמָּהֶם. אָמַר לוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא: טוֹל מַקֵּל וְהַךְ עַל קׇדְקֳדָם. דַּבָּר אֶחָד לַדּוֹר, וְאֵין שְׁנֵי דַּבָּרִין לַדּוֹר.
The Gemara continues to interpret verses pertaining to judges and judgment. It is written: “And I charged your judges at that time” (Deuteronomy 1:16), and it is written soon thereafter: “And I commanded you at that time all the things that you should do” (Deuteronomy 1:18). There is an apparent contradiction between these verses, as one indicates God commanded the judges and the other indicates He commanded the people. Rabbi Elazar says that Rabbi Simlai says: Moses issued a warning to the community that the awe of the judge must be upon them, and Moses issued a warning to the judge that he must bear the burden of the community. Up to what degree must the judge bear this burden? Rabbi Ḥanan, and some say Rabbi Shabbtai, says: It is as Moses said, that he carried Israel “as a nursing father carries the sucking child” (Numbers 11:12). Similarly, a distinction is drawn between two verses where Moses commanded Joshua concerning his impending leadership: It is written: “For you shall go with these people into the land” (Deuteronomy 31:7), and it is written: “For you shall bring the children of Israel into the land” (Deuteronomy 31:23). Rabbi Yoḥanan reconciled the difference between these two charges and said: Moses said to Joshua, in the first verse: You and the elders of the generation will enter into Eretz Yisrael together with the people, i.e., the elders will assist you in the leadership. Subsequently, in the second verse, the Holy One, Blessed be He, said to Joshua: You yourself must bring the people: Take a rod and strike the people upon their skulls. There must be one clear and authoritative leader for the generation, and there may not be two or more leaders for the generation.