Rashi on Deuteronomy 4:32/רש"י על דברים ד׳:ל״ב

1לימים ראשנים is the same as על ימים ראשנים [ASK NOW] REGARDING THE FORMER DAYS.

2ולמקצה 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).

3הנהיה 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