http://revach.net/article.php?id=5233

Section: Parshas HaShavua   Category: Life Lessons
Parshas Emor: Even A Kohen Gadol On Yom Kippur

In addition to the women a Kohen may not marry, a Kohen Gadol may not even marry a widow. Why not? The Meforshim say we learn from here a mind boggling lesson about the weakness of man.

The most exalted member of Klal Yisroel is the Kohen Gadol. The most awesome day of the year is Yom Kippur. The holiest place on earth is the Kodesh HaKodashim. Once a year these three meet as the Kohen Gadol enters the Kodesh HaKodashim on Yom Kippur ablaze with Kedusha and shining like a Malach.

When he enters he says Hashem's Holy Name. The Torah was afraid that if there was a married woman that he desires he will wish her husband to die while he is in the Kodesh HaKodashim. In order to forestall this great tragedy the Torah forbids a Kohen Gadol from marrying a widow making his efforts meaningless.

The lesson here is that even a person who at that moment has reached the pinnacle of holiness, is still human and can err in a most humanly way.