Parallel
Leviticus 21:4
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
But he shall not defile himself, being a chief man among his people, to profane himself (note: Or, being an husband among his people he shall not defile himself for his wife etc.).
He is not to defile himself for those related to him by marriage, and so profane himself.