Leviticus 20:19

King James Version - American Edition

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.

Cross References

Exodus 6:20

And Amram took him Joch´ebed his father's sister to wife; and she bare him Aaron and Moses: and the years of the life of Amram were a hundred and thirty and seven years.

Leviticus 18:6

None of you shall approach to any that is near of kin to him, to uncover their nakedness: I am the Lord.