Leviticus 21:15

15 And he shall not profane his seed among his people: I the Lord that sanctifies him.

Leviticus 21:15 Meaning and Commentary

Leviticus 21:15

Neither shall he profane his seed among his people
By marrying any such persons, whereby his children, born of them, would lie under disgrace, and be unfit to succeed him in the priesthood, or by marrying among mean persons, or by marrying them to such as were unlawful, and would be a disparagement to them:

for I the Lord do sanctify him;
separate him from all others, to the high and sacred office of the high priesthood, and am concerned for his honour and holiness; and therefore it became him to observe these laws and rules, and abstain from such disagreeable marriages.

Leviticus 21:15 In-Context

13 He shall take for a wife a virgin of his own tribe.
14 But a widow, or one that is put away, or profaned, or a harlot, these he shall not take; but he shall take for a wife a virgin of his own people.
15 And he shall not profane his seed among his people: I the Lord that sanctifies him.
16 And the Lord spoke to Moses, saying,
17 Say to Aaron, A man of thy tribe throughout your generations, who shall have a blemish on him, shall not draw nigh to offer the gifts of his God.

The Brenton translation of the Septuagint is in the public domain.