Genesis 6:15
King James Version
“And this which thou shalt make it The length of the ark three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.”
Context
12And God looked upon the earth, and, behold, it was corrupt; for all flesh had corrupted his way upon the earth.
13And God said unto Noah, The end of all flesh is come before me; for the earth is filled with violence through them; and, behold, I will destroy them with the earth.
14Make thee an ark of gopher wood; rooms shalt thou make in the ark, and shalt pitch it within and without with pitch.
15And this which thou shalt make it The length of the ark three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.
16A window shalt thou make to the ark, and in a cubit shalt thou finish it above; and the door of the ark shalt thou set in the side thereof; lower, second, and third shalt thou make it.
17And, behold, I, even I, do bring a flood of waters upon the earth, to destroy all flesh, wherein the breath of life, from under heaven; every thing that in the earth shall die.
18But with thee will I establish my covenant; and thou shalt come into the ark, thou, and thy sons, and thy wife, and thy sons’ wives with thee.