Genesis 7:11
In the six hundredth year of Noah's life, in the second month, the seventeenth day of the month, the same day were all the fountains of the great deep broken up, and the windows of heaven were opened.

The water came from above and from below. As well, it is believed by some Scientists, and rightly so, that the waters came with such force from the Earth, that it would have taken only a few days to have cut the Grand Canyon and other such similarities.

Genesis 7:12
And the rain was upon the earth forty days and forty nights.

The literal Hebrew translation is, “And there was violent rain...”.

Genesis 7:13
In the selfsame day entered Noah, and Shem, and Ham, and Japheth, the sons of Noah, and Noah's wife, and the three wives of his sons with them, into the ark;

This verse shows that on the day the rains began, Noah and his family entered the Ark.

Genesis 7:14
They, and every beast after his kind, and all the cattle after their kind, and every creeping thing that creepeth upon the earth after his kind, and every fowl after his kind, every bird of every sort.

They, Noah and his family, went into the ark; as did all sorts of beasts and cattle, reckoned one hundred and thirty sorts, by some one hundred and fifty, including serpents: Supposed to be scarce thirty sorts; not one sort of creature was left out, though ever so small, and despicable.

If divided into nine sorts, and reckon them up to be one hundred and ninety five in the whole. Bird of every wing, let their wings be what they will; some, are winged with feathers, others with skin, as bats.

Genesis 7:15
And they went in unto Noah into the ark, two and two of all flesh, wherein is the breath of life.

The Lord gave these animals the instinct to do what they did.

Genesis 7:16
And they that went in, went in male and female of all flesh, as God had commanded him: and the LORD shut him in.

The contrast between the two names of the Deity is most vividly presented here. In this one Verse, both “God” and “LORD” are used. It is “Elohim” Who commands Noah about the beasts
It is “Jehovah,” the Covenant God, Who ensures his safety by closing the Ark behind him.

Nothing can more fully express the Believer’s perfect security in Christ than those words, “the LORD shut him in”.

Genesis 7:17
And the flood was forty days upon the earth; and the waters increased, and bare up the ark, and it was lift up above the earth.

Wherever it was that Noah built the Ark, the flood waters reached it, and it began to float.

What is the scientific, historical evidence for the Flood?

Genesis 7:18
And the waters prevailed, and were increased greatly upon the earth; and the ark went upon the face of the waters.

Probably pertains to the fact that the scoffers flattered themselves that it would abate, and never come to extremity; but still it increased, and prevailed.

Genesis 7:19
And the waters prevailed exceedingly upon the earth; and all the high hills, that were under the whole heaven, were covered.

Those who dwelt upon the tops of the loftiest mountains perished equally with those who lived in the deepest valleys. There was no difference.

Many who live upon the mountains of morality think themselves secure from the judgment of fire that is now coming, and pity the certain fate of those who live in the depths of vice.

But without Christ, all will perish.

Genesis 7:20
Fifteen cubits upward did the waters prevail; and the mountains were covered.
Above the highest mountains.

Many Scholars believe that before the flood the tallest mountain in the world was approximately 10,000 feet or less. “the great deep being broken up” changed much of the topography of the world, making huge canyons and, at the same time, huge mountains.

Genesis 7:21
And all flesh died that moved upon the earth, both of fowl, and of cattle, and of beast, and of every creeping thing that creepeth upon the earth, and every man:

The fish were not destroyed, but others that had animal life in them, of which motion was a sign upon the earth were. Excepting those that were in the ark. This general destruction of the creatures, as it was for the sins of men, whose they were, and by whom they were abused, and is expressive of God's hatred of sin, and of his holiness and justice in the punishment of it.

So, on the other hand, it is a display both of the wisdom of God, in causing a decrease of the creatures, in proportion to the decrease of men, who now would not need so many.
And of the goodness of God to those that were spared, that so the beasts of the field, especially the wilder sort, might not multiply against them, and prevail over them, see Exodus 23:29. Except those in the ark.

And the number of them is supposed to be as great, if not greater, than of the present inhabitants of the earth, by those who are skillful in the calculation of the increase of men. It is thought it may be easily allowed, that their number amounted to eleven billion. And some have made their number to be eighty billion.

The Apostle Peter calls them, the world of the ungodly, 2 Peter 2:5.

Genesis 7:22
All in whose nostrils was the breath of life, of all that was in the dry land, died.

Not one wave of that judgment reached Noah; he was absolutely safe. Noah could not perish because the Ark could not perish. The Ark could not perish because Jehovah was in the Ark.
In effect, the Ark was Christ.

Therefore, God was in Christ, reconciling man unto Himself.

Genesis 7:23
And every living substance was destroyed which was upon the face of the ground, both man, and cattle, and the creeping things, and the fowl of the heaven; and they were destroyed from the earth: and Noah only remained alive, and they that were with him in the ark.

Only those who are “in Christ” are saved. There are no exceptions [Jn. 3:16]. On the other hand, there have recently come from the press several books by men whom I consider to be pseudo intellectuals and pseudo theologians. They take the position that the Flood was local, that is, that it was confined to the Tigris-Euphrates Valley.

In other words, it was sort of a big swimming pool and that is about all. The Genesis Flood absolutely demolishes that thought altogether, and I am sure that you realize that the Scriptures make it very clear that the Flood covered the whole earth.

God said that the entire earth was going to be destroyed by the Flood. “And 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” (Gen. 6:13).

The human family had already gotten to North America, and the animals were certainly there—nobody would argue that point for a moment. But if you say that the Flood was not universal, then you have someone besides Noah starting the human family over again—and that is just not the way the Word of God tells it. You are on the horns of a dilemma, as I see it: you either have to accept the Word of God, or you have to reject what it says.

To my judgment, to attempt to make a case for a local flood is actually, in the long run, to reject the Word of God. The Holy Bible makes it very clear that it was a universal flood. “And every living substance was destroyed . . . and Noah only remained alive, and they that were with him in the ark.”

Genesis 7:24
And the waters prevailed upon the earth an hundred and fifty days.

Which is to be reckoned not from the end of the forty days' rain, but from the beginning of the flood.
For from the seventeenth day of the second month, when the fountains of the deep were broken up, and the windows of heaven were opened, unto the seventeenth day of the seventh month, when the ark rested on the mountains of Ararat, and the waters decreased, were just five months, or one hundred and fifty days.

Until which time the waters increased yet more and more, even after the forty days' rain.
So that it seems there was a continual rain afterwards, or otherwise it is not so easy to account for the increase of the waters. In other words, for a period of approximately half a year, for five months, the waters prevailed on the earth.

The Genesis Flood not only answers the question of its being a universal rather than a local flood, but it also answers this question of uniformitarianism. There are those who take the position that there was no such thing as a great convulsion or catastrophe like the Flood.

Peter makes it very clear that we should expect such scoffers. “Knowing this first, that there shall come in the last days scoffers, walking after their own lusts, And saying, Where is the promise of his coming? for since the fathers fell asleep, all things continue as they were from the beginning of the creation” (2 Pet. 3:3–4).

The scoffer has always been a uniformitarian, but you could not very well hold that position and accept the integrity of the Word of God at this particular point.
This is very important to see.