פירוש על ישעיהו 40:21

Do you not know...the foundations of the earth Who founded it, and you should have worshipped Him.

הלא תדעו Have ye not known by your own common sense, which is the most important source of knowledge ;

הלא תשמעו have you not heard; have you not been informed by others;

הלא הגד מראש לכם hath it not been told you from the beginning, this is the lowest degree of knowledge.⁴⁹The various degrees of knowledge, with regard to the mode of acquiring it, are, according to I. E., respectively expressed in Hebrew by ידע to know from our own reasoning, שמע to know from information and instruction received from others, הֻגַּד to be told, without any effort of our own reason.

From the beginning. From the first day of your existence; and even if you have no knowledge at all, have you not considered the foundations of the earth? etc.