New Living Translation
Even if the dead person is their own father, mother, brother, or sister, they must not defile themselves, for the hair on their head is the symbol of their separation to God.

American Standard Version
He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die; because his separation unto God is upon his head.

Berean Study Bible
Even if his father or mother or brother or sister should die, he is not to defile himself, because the crown of consecration to his God is upon his head.

Douay-Rheims Bible
Neither shall he make himself unclean, even for his father, or for his mother, or for his brother, or for his sister, when they die, because the consecration of his God is upon his head.

English Revised Version
He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die: because his separation unto God is upon his head.

King James Bible
He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die: because the consecration of his God is upon his head.

World English Bible
He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die; because his separation to God is on his head.

Young's Literal Translation
for his father, or for his mother, for his brother, or for his sister -- he is not unclean for them at their death, for the separation of his God is on his head;

Numbers 6:7 Additional Translations ...