Genesis 6:15-19 New American Bible, Revised Edition (NABRE)

15. This is how you shall build it: the length of the ark will be three hundred cubits, its width fifty cubits, and its height thirty cubits.

16. Make an opening for daylight and finish the ark a cubit above it. Put the ark’s entrance on its side; you will make it with bottom, second and third decks.

17. I, on my part, am about to bring the flood waters on the earth, to destroy all creatures under the sky in which there is the breath of life; everything on earth shall perish.

18. I will establish my covenant with you. You shall go into the ark, you and your sons, your wife and your sons’ wives with you.

19. Of all living creatures you shall bring two of every kind into the ark, one male and one female, to keep them alive along with you.

Genesis 6