Leviticus 21:3

1 Then the LORD said to Moses, “Speak to Aaron’s sons, the priests, and tell them that a priest is not to defile himself for a dead person among his people,

2 except for his immediate family—his mother, father, son, daughter, or brother,

or his unmarried sister who is near to him, since she has no husband.

4 He is not to defile himself for those related to him by marriage, and so profane himself.

5 Priests must not make bald spots on their heads, shave off the edges of their beards, or make cuts in their bodies.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
or his unmarried sister who is near to him, since she has no husband.
KJV
And for his sister a virgin, that is nigh unto him, which hath had no husband; for her may he be defiled.
WEB
and for his virgin sister who is near to him, who has had no husband; for her he may defile himself.
ASV
and for his sister a virgin, that is near unto him, that hath had no husband; for her may he defile himself.
DARBY
and for his sister, a virgin, that is near unto him, who hath had no husband, for her may he make himself unclean.
BLB
and his sister, the virgin, who is near to him, who has not had a husband. He may defile himself for her.
ÅB
eller hans ugifte søster, som enda hører til slekten og ikke er blitt noen manns hustru; ved henne kan han gjøre seg uren.
OTB
og også for sin jomfrusøster som er avhengig av ham, siden hun ikke har noen mann; for henne kan han gjøre seg uren.
B1930
eller hans ugifte søster, som ennu hører til ætten og ikke er blitt nogen manns hustru; ved henne kan han gjøre sig uren.

Study notes (Tyndale)

Original text and word study