Genesis 6:16-18 Make a roof for it and finish the ark to within 18 inches of the top. Put a door in the side of the ark and make lower, middle and upper decks. I am going to bring floodwaters on the earth to destroy all life under the heavens, every creature that has the breath of life in it. Everything on earth will perish. But I will establish my covenant with you, and you will enter the ark—you and your sons and your wife and your sons' wives with you.
And there it is - the words we've all been waiting to hear: "I will spare you, Noah, and your family". Whew! Again, we have God giving very specific instructions as to the structure, but Noah must have already had the knowledge of how to go about it. This finishes up the requirements of the ark itself. Now there had never been a flood on the earth before, I doubt that Noah had any idea - or even came close to imagining the dramatic geographical changes that would take place because of this. Or did he even realize the consequences that this would have on how he lived life and starting completely over again from scratch?
Here's another thing: We don't know whether Noah's wife was a godly woman or not - we can assume simply because she's married to Noah, but it's not mentioned. Neither is it mentioned about his sons' wives. But yet, God knew that Noah needed his wife, just like the sons n