Leviticus 21:3 in the King James Version
And for his sister a virgin, that is nigh unto him, which hath had no husband; for her may he be defiled.
Context
2 except for his relatives that are near to him: for his mother, for his father, for his son, for his daughter, for his brother,
3 and for his virgin sister who is near to him, who has had no husband; for her he may defile himself.
4 He shall not defile himself, being a chief man among his people, to profane himself.