Read Leviticus 20:19 Using Other Translations
And thou shalt not uncover the nakedness of thy mother's sister, nor of thy father's sister: for he uncovereth his near kin: they shall bear their iniquity.
You shall not uncover the nakedness of your mother's sister or of your father's sister, for that is to make naked one's relative; they shall bear their iniquity.
“Do not have sexual relations with your aunt, whether your mother’s sister or your father’s sister. This would dishonor a close relative. Both parties are guilty and will be punished for their sin.