Genesis 6:16-18

16 Make an opening one cubit below the top of the ark all around; and you must set the door of the ark on the side. Make it with a lower, a second, and a third story.

17 I will bring a flood of waters on the earth to destroy all flesh, wherever there is the breath of life under heaven, and everything that is on the earth will die.

18 But I will establish My covenant with you; you must go into the ark—you, and your sons, and your wife, and your sons’ wives with you.