Genesis 7:9-11

International Standard Version

⁹ two by two, male and female, they entered the ark to join Noah, just as God had commanded.

¹⁰ Seven days later, the flooding started. ¹¹ On the seventeenth day of the second month, when Noah was 600 years old, all the springs of the great deep burst open, the floodgates of the heavens were opened,