http://revach.net/article.php?id=2327

Section: Parshas HaShavua   Category: Quick Vort
Parshas Bahaloscha: Rav Chaim Volozhin - Why Is Wealth a Requirement For Greatness?
“ViHaIsh Moshe Anav MiKol Adam," Moshe’s greatness was that he was more humble than any other person.  The Gemara in Nedarim (38a) says that the Shechina only rests on someone who is wise, strong, wealthy, and humble.  The MiShulchan Gavoah says that Rav Chaim Volozhin asks, "Why is being strong and rich mandatory for someone to have the Shechina rest on him?"

He answers that the real key is humility, just like the pasuk says about Moshe.  However, if a person is weak and poor, his humility is not as telling, since he doesn’t have much to be haughty about.  A person who is wise, strong, and wealthy, yet is still humble, he is truly deserving to be a sanctuary for the Shechina.