Thou shalt not uncover the nakedness of thy father's sister: she is thy father's near kinswoman.
Leviticus 20:19
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.
Exodus 6:20
And Amram took him Jochebed his father's sister to wife; and she bare him Aaron and Moses: and the years of the life of Amram were an hundred and thirty and seven years.