申命記 4:32

לימים ראשנים is the same as על ימים ראשנים [ASK NOW] REGARDING THE FORMER DAYS. ולמקצה השמים AND FROM ONE END OF HEAVEN — i.e. and also ask of all the creatures from one end to the other end of heaven. This is its plain sense, but a Midrashic explanation is: it teaches us regarding Adam's height, that it reached from earth to heaven, and that this is the very same measurement as from one end of heaven to the other (Sanhedrin 38b). הנהיה כדבר הגדול הזה [ASK] … WHETHER THERE HATH BEEN ANYTHING LIKE THIS GREAT THING — And what is the great thing? What is stated in the two following verses: השמע עם וגו׳ DID EVER A PEOPLE HEAR, etc., and

כִּ֣י שְׁאַל־נָא֩ לְיָמִ֨ים רִֽאשֹׁנִ֜ים אֲשֶׁר־הָי֣וּ לְפָנֶ֗יךָ לְמִן־הַיּוֹם֙ אֲשֶׁר֩ בָּרָ֨א אֱלֹהִ֤ים ׀ אָדָם֙ עַל־הָאָ֔רֶץ וּלְמִקְצֵ֥ה הַשָּׁמַ֖יִם וְעַד־קְצֵ֣ה הַשָּׁמָ֑יִם הֲנִֽהְיָ֗ה כַּדָּבָ֤ר הַגָּדוֹל֙ הַזֶּ֔ה א֖וֹ הֲנִשְׁמַ֥ע כָּמֹֽהוּ׃

For ask now of the days that are past, which were before thee, since the day that God created man upon the earth, and from the one side of heaven to the other, whether there has been any such thing as this great thing is, or whether aught has been heard like it?