This ability of “selflessness” is called “מַ"ה” and is an expression of Wisdom of Holiness. Since Avram was on an exalted level of Wisdom of Holiness, his selflessness, his “מַ"ה” was very powerful. Therefore, he was able to correct the chaotic selfishness of our world and “fix” its chaotic nature, thereby reconnecting it to Holiness.
Hashem told Avram: “You should go out,” this refers to the Divine Name spelled out with a numerical value of Mah (45) which goes out together with Avram to repair and refine the world.
This selflessness of מ"ה is connected Hashem’s Name as follows: The Name of י-ה-ו-ה when each of those four letters is spelled out fully is read: יוד-הא-ואו-הא. If you add the numerical value of the above 10 letters, it adds up to 45, which is מ"ה. It is this Name of Hashem that empowers Avram to have such selflessness, which is how he is able to “fix” the chaos of the world.
When Hashem told Avram to “go out,” He (also) meant: Go out empowered by the Name מ"ה to bring selflessness into the world and correct it, thereby reconnecting it with Holiness.
This Name of מ"ה must descend from one level to the next, beginning from the level of “Av Ram-Exalted Wisdom,” which, parenthetically, is also known as the level of Yesod Abba.
Yesod Abba and the Transmission of Wisdom
Abba refers to Chochma-Wisdom. Yesod refers to connection, or transmission of one level to the next. Yesod Abba means how Chochma-Wisdom is able to be given over and integrated into all the lower levels of understanding, emotion, and action. Avram was on a very high level of Chochma-Wisdom, but at the same time had the potential to reveal that Wisdom down here.
