Every letter that is described in the article “The Letters of Rabbi Hamnuna Saba“ indicates a certain word or action. The letter Mem stands for the word “king,” so why wasn’t the world created by this letter? It’s as if there is a difference between the correcting force and the state to which it brings the object it corrects.
Mem is the correcting force, Malchut (the kingdom) of the forces, the King stands for domination, and the world cannot exist without a king, which means without a correcting force that persistently advances the desire to receive to correction, to the desired state.
On the one hand, a king is a very high illumination in which the Light of Hochma and the Light of Hassadim that come from the head of Arich Anpin connect. But on the other hand, this illumination cannot dominate the world since it fills up the created beings. The created beings need freedom! Although there is a king and there is Malchut, their domination should be accepted gladly and willingly below, so that the people will want to resemble the king by their own freewill.
A king should not be a dictator and a tyrant, but a role model and a symbol that one should reach. This king rules, but his ruling is good and it attracts the people. Thus the king of Israel differs from the king of the nations of the world. The king of Israel is not an example of domination. He rules by his Holiness, by being great and sublime, corrected and whole and not by force.
He is very powerful but it’s a totally different power, different than other kings.
From the 2nd part of the Daily Kabbalah Lesson 5/27/13, “Introduction to The Book of Zohar”