Leviticus 20:19
"You are not to have sexual relations with your mother's sister or your father's sister, because that is laying bare the nakedness of his close relative. They'll continue to bear responsibility for their iniquity.
Leviticus 18:6
"A person is not to approach a near blood relative for sexual relations. I am the LORD.
Exodus 6:20
Amram married Jochebed, his father's sister, and she bore him Aaron and Moses. Amram lived for 137 years.
Leviticus 18:12-30
"You are not to have sexual relations with your father's sister. She's your father's near blood relative.