Numbers 6:7
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 9:6
And there are men who have been defiled by the body of a man, and they have not been able to prepare the passover on that day, and they come near before Moses, and before Aaron, on that day,
Leviticus 21:1-2
And Jehovah saith unto Moses, 'Speak unto the priests, sons of Aaron, and thou hast said unto them, For any person a priest is not defiled among his people,
Leviticus 21:10-12
'And the high priest of his brethren, on whose head is poured the anointing oil, and hath consecrated his hand to put on the garments, his head doth not uncover, nor rend his garments,
Ezekiel 44:25
And unto any dead man they come not for uncleanness, but for father, and for mother, and for son, and for daughter, for brother, for sister who hath not been to a man, they defile themselves.