Neither shall he defile his descendants among his people: for I the LORD do sanctify him.
Read Chapter 21
George Leo Haydock
Nation. The wife of the high priest must be of noble birth, that he may speak to kings and princes with more authority. (Menochius)
Hebrew, "he shall not defile his race", by marrying one of another nation, or contrary to law. If he do, the children shall have no share in the priesthood.