Moses assured the Jewish people that they would always be able to know what G‑d expects of them by studying the Torah.
We Can All Study the Torah
כִּי הַמִּצְוָה הַזֹּאת . . . לֹא נִפְלֵאת הִוא מִמְּךָ וְלֹא רְחֹקָה הִוא . . . וְלֹא מֵעֵבֶר לַיָּם הִוא . . . כִּי קָרוֹב אֵלֶיךָ הַדָּבָר מְאֹד וגו': (דברים ל:יא–יד)
[Moses said to the Jewish people, regarding the study of the Torah,] “This commandment is not remote from you; it is not far away . . . it is not beyond the sea . . . for this thing is very close to you. Deuteronomy 30:11-14

The Jewish people had been studying the Torah for nearly 40 years when Moses said these words, so they knew firsthand that it was accessible (i.e., not “remote,” “far away,” or “beyond”). Rather, Moses was telling us that although there are indeed parts of the Torah that are “remote, far away, and beyond,” these parts of the Torah are not “remote from, far away from, or beyond” you. Inasmuch as we are rooted in G‑d’s essence, which transcends the Torah, even the most challenging or mystical aspects of the Torah are not beyond us. We are all capable of studying all aspects of the Torah.1