Of course, the "It was a miracle" explanation is always a possibility. But then you have to ask why God wanted an ark built in the first place instead of just miraculously saving them.
That's a fair question. Though I'd like to say before I get into this: by Jehovah God providing those dimensions, it gives evidence of it being a real, Divinely-inspired event....only in the last two centuries, have shipbuilders come to realize that, for that kind of vessel .. non-powered, with no steering and just needing to stay upright and float .. the ratio of those dimensions, i.e., Length being 6 times the Width and 10 times the Height, are
ideal, for seakeeping ability.
Source:
WWF: Korean Safety Paper
How did Moses (who wrote Genesis) know?
(It was no 'cube', as in the Epic of Gilgamesh.)
Now, to answer your question, "why didn't God 'just miraculously'
save them?"
He did...but I think I know what you mean...the extent of it all, right?
Well, to begin with, we have to establish the ID of those in Genesis 6:1-4...."
thie sons of God" taking women: "
all whom they chose". (How could they do this? Take
any woman, regardless of married or not?
Because they were stronger than human men!)
Please read Job 38:7..."(at earth's creation) all
the sons of God began shouting in applause." "The sons of God" here must necessarily be the angels (see
Job 1:6;
Job 2:1), since there were no men as yet in existence.
The same Hebrew words are used at Genesis 6, referring to angels. But these angels, without Jehovah's approval, took on human form and started having sex w/ women, and having kids, "the Nephilim"). (
Sounds like Ancient Greek, Roman, Hindu, etc. mythologies, like Zeus fathering Hercules, doesn't it? All mythology is rooted in some form of truth!)
These angels who did this, at the time of the Flood, had to dematerialize and thereafter became demons, whom Peter called
"the angels who sinned" @2 Peter 2:4. Jude says they "forsook their natural dwelling place"... (that's appropriate!) They're also called "the spirits in prison", whom Jesus preached to.
With their power, they could've built colonies / kingdoms in other parts of the Earth.
Anyways....the entire Earth needed to be cleansed of their influence....
The Earth is for 'men to reside' Psalms 115:16), not materialized spirit creatures.
What kind of life would humans have -- being enslaved and sex-trafficked to superhuman creatures -- if God
hadn't stepped in?
Would you like to live in a world like Greek mythology depicts?