Leviticus 21:13
12 He must not go out from the sanctuary and must not profane the sanctuary of his God, because the dedication of the anointing oil of his God is on him. I am the Lord. 13 He must take a wife who is a virgin. 14 He must not marry a widow, a divorced woman, or one profaned by prostitution; he may only take a virgin from his people as a wife,
LXX Leviticus 21:12-14
12 And he will not go out of the sanctuary, and he will not profane the sacred sanctuary of his God, because the holy anointing oil of God is on him—I am the Lord. 13 He will take a virgin from among his people, 14 but a widow or a divorced woman or a defiled woman or a prostitute, these types of women he will not take. Instead, he will take a virgin from among his own people as a wife.
Philo The Special Laws 1.110
110 And besides these commands, he also defined precisely the family of the women who might be married by the high priest, commanding him to marry not merely a woman who was a virgin, but also one who was a priestess, the daughter of a priest, that so both bridegroom and bride might be of one house, and in a manner of one blood, so as to display a most lasting harmony and union of disposition during the whole of their lives.
Notes and References
"... Greek Leviticus has numerous, mainly minor, pluses frequently in the Tetragrammaton to which θεός is added ... at 21:13 the Masoretic text has: “And he shall take a woman in her virginity”; Greek Leviticus adds “from his people.” This plus could indicate that a Priest may only take a wife from his own stock – the daughter of a Priestly family, as understood by Philo, The Special Laws 1.110 ..."
Zipor, Moshe A. "The Nature of the Septuagint Version of the Book of Leviticus" in Himbaza, Innocent (ed.) The Text of Leviticus: Proceedings of the Third International Colloquium of the Dominique Barthélemy Institute (pp. 121-132) Peeters, 2020