Musar su Salmi 33:9

I will try to explain the whole subject which the Midrash calls חקה חקקתי, גזרה גזרתי, by means of a short introduction. A look at the totality of the commandments reveals that they are divided into four categories, as explained in the ספר יצירה. Kabbalistic literature in which the גלוי עולמות, the revelation of various worlds, is discussed bases this division on the verse כי הוא אמר ויהי (Psalms 33,9). The terms used are רשי"מו, חקי"קה, חצי"בה, שי"ה. First, there was the will, רצון, to create the universe, which is referred to in that verse as כי הוא אמר.

כי בי-ה ה' צור עולמים . This means that the universe, i.e. the עולם הבא, was created with the letter י, whereas the עולם הזה, the material world, was created with the letter ה. The Mishnah in Avot 5,1 already told us that G–d created the universe with ten מאמרות, directives. The first of these was אחדות, Unity, as we will explain later. The term דביקות, attachment, refers to something that is ongoing, everlasting, as we know from Deut.4,4, ואתם הדבקים בה' אלוקיכם, חיים כולכם היום, "you who have been cleaving to the Lord your G–d are all alive this day." The material world was created by five מאמרות, i.e. the letter ה. Our sages in Rosh Hashanah 21b, say that 50 שערי בינה, "gates of understanding," were created, and that Moses was given all of them except one. We know this because it says of Moses "ותחסרהו מעט מאלוקים," that You have made him only a little less than divine" (Psalms 8,6). In the introduction on his commentary on the Torah Nachmanides (Chavell edition page 3) describes this statement as meaning that all parts of creation such as the minerals, the various categories of vegetation, animal life and even human life, each required a special שער בינה by means of which they were brought into existence. This process continued until possession of an advanced שער בינה would enable a person to understand the psyche of fellow human beings, enable him to divine if his counterpart was a thief, an adulterer, etc. and even enable him to know if someone else who was suspected of disobeying the laws of ritual impurity concerning sexual relations with a menstruant woman was in fact guilty of such misconduct. Beyond that, a still higher שער בינה would give such a person access to knowledge about the motions and functions of the stars and planets. The total number of such שערי בינה is fifty, the fiftieth being reserved for the Creator alone, who had not revealed that potential to any creature. The wording in the Talmud, נבראו, "they have been created," suggesting that they had not remained only in the realm of G–d Himself, need not be understood literally, as the Talmud was concerned with describing what happened to the majority of these שערי בינה. So far Nachmanides. I personally, feel that the 50th שער בינה, an all embracing potential called hiyuli, primordial is the creative potential which has been withheld from any human being. Nachmanides possibly has this in mind when he refers to the verse in Psalms 33,9: “הוא אמר ויהי,” He said and it came into being."