Negative commandment · Lo Ta’aseh #160 of 613
For a priest not to marry a divorcee
שלא ייקח כוהן גרושה
The verse · Vayikra 21:7
אִשָּׁה זֹנָה וַחֲלָלָה לֹא יִקָּחוּ וְאִשָּׁה גְּרוּשָׁה מֵאִישָׁהּ לֹא יִקָּחוּ כִּי־קָדֹשׁ הוּא לֵאלֹהָיו
“They shall not take a wife that is a harlot, or profaned; neither shall they take a woman put away from her husband: for he is holy to his God.”
The Rambam’s words
For a priest not to marry a divorcee, as [Leviticus 21:7] states: "...nor may they marry a woman divorced from her husband."
שלא ייקח כוהן גרושה, שנאמר "ואישה גרושה מאישה לא ייקחו" (ויקרא כא,ז).
Why · Sefer HaChinuch #268
That a priest not marry a divorcee
“It is from the roots of the commandment [that it is] since the priests were chosen to always perform the service of G-d, may He be blessed.”
Who & when
“And [it] is practiced by priests in every place and at all times.”
Where in the Mishneh Torah
Hilchot Forbidden Intercourse הלכות איסורי ביאה