Exodus 2:1-2

The Birth of the Deliverer

2:1 A man from the household of Levi married a woman who was a descendant of Levi. 2:2 The woman became pregnant and gave birth to a son. When she saw that he was a healthy child, she hid him for three months.

Exodus 6:20

6:20 Amram married his father’s sister Jochebed, and she bore him Aaron and Moses. (The length of Amram’s life was 137 years.)

Leviticus 18:12

18:12 You must not have sexual intercourse with your father’s sister; she is your father’s flesh.