Deuteronomy 29:3

ולא נתן ה' לכם לב לדעת YET THE LORD HATH NOT GIVEN YOU A HEART TO KNOW — i.e. to understand the loving-kindnesses of the Omnipresent and to cleave unto Him. עד היום הזה UNTO THIS DAY — I have heard that on the day when Moses gave the Book of the Law to the sons of Levi, as it is written, (Deuteronomy 31:9) “And he gave it to the priests the sons of Levi”, all Israel came before Moses and said to him: Teacher Moses, we, too, stood at Sinai and accepted the Torah, and it was given to us; why, then, do you give the people of your tribe control over it, that they may tomorrow say to us, “Not to you was it given, but to us was it given”? Moses rejoiced at this matter and in reference to this he said to them, (Deuteronomy 27:9) “This day have you become the people [of the Lord thy God]”, meaning, Only this day have I come to understand that you are attached to and have a desire for the Omnipresent.

וְלֹא־נָתַן֩ יְהֹוָ֨ה לָכֶ֥ם לֵב֙ לָדַ֔עַת וְעֵינַ֥יִם לִרְא֖וֹת וְאׇזְנַ֣יִם לִשְׁמֹ֑עַ עַ֖ד הַיּ֥וֹם הַזֶּֽה׃

yet the Lord has not given you a heart to perceive, and eyes to see, and ears to hear, until this day.