King James Version, Updated™

KJV:   1 And the LORD said unto Noah, Come thou and all thy house into the ark ; for thee have I seen righteous before me in this generation.

KJVu: 1 And the LORD said to Noah, "You and all your house come into the ark , for I have seen that you are righteous before me in this generation.

KJV:   2 Of every clean beast thou shalt take to thee by sevens, the male and his female : and of beasts that are not clean by two, the male and his female.

KJVu: 2 You shall take seven of every clean animal, a male and his female , and the animals that are not clean you shall take two, a male and his female.

KJV:   3 Of fowls also of the air by sevens, the male and the female ; to keep seed alive upon the face of all the earth.

KJVu: 3 For the birds of the air you shall also take by sevens, a male and a female , to keep their offspring alive on the face of all the earth.

Notes: "Seed" highlighted in the KJV verse is Strong’s H2233 with a Strongs’s definition of "a sowing, seed, offspring."

KJV:   4 For yet seven days , and I will cause it to rain upon the earth forty days and forty nights ; and every living substance that I have made will I destroy from off the face of the earth.

KJVu: 4 In seven days I will cause it to rain on the earth forty days and forty nights , and I will destroy every living thing that I have made from off the face of the earth.

Notes: "Substance" highlighted in the KJV verse is Strong’s H3351 with a Brown-Driver-Briggs' definition of "all that subsists Genesis 7:4." From Strong’s Exhaustive Concordance "living substance From quwm; properly, standing (extant), i.e. By implication, a living thing — (living) substance." In colloquial English, that would be "every living thing."

KJV:   5 And Noah did according unto all that the LORD commanded him.

KJVu: 5 And Noah did all that the LORD commanded him to do.

KJV:   6 And Noah was six hundred years old when the flood of waters was upon the earth.

KJVu: 6 Noah was 600 years old when the floodwaters came upon the earth.

KJV:   7 And Noah went in, and his sons, and his wife, and his sons' wives with him, into the ark , because of the waters of the flood.

KJVu: 7 Noah , along with his sons, his wife, and his sons' wives, went into the ark because of the floodwaters.

KJV:   8 Of clean beasts, and of beasts that are not clean, and of fowls, and of every thing that creepeth upon the earth,

KJVu: 8 Of clean animals, of animals that are not clean, of birds, and of everything that creeps on the earth,

KJV:   9 There went in two and two unto Noah into the ark, the male and the female, as God had commanded Noah.

KJVu: 9 they went to Noah two by two into the ark, male and female, as God had commanded Noah.

KJV:   10 And it came to pass after seven days , that the waters of the flood were upon the earth.

KJVu: 10 And it came to pass after seven days that the floodwaters were upon the earth.

KJV:   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.

KJVu: 11 In the 600th year of Noah’s life, in the second month, the 17th day of the month, on that same day all the fountains of the great deep burst open, and the windows of heaven were opened.

Notes: "Broken Up" highlighted in the KJV verse is Strong’s H1234 with a Brown-Driver-Briggs' definition of "like new wine-skins it will burst open; so of the water-receptacles (מעינות) of the great deep, at the flood Genesis 7:11."

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

KJVu: 12 And it rained on the earth for 40 days and 40 nights.

KJV:   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;

KJVu: 13 On the very same day Noah and his sons, Shem, Ham, and Japheth, Noah’s wife, and the three wives of his sons, entered into the ark.

KJV:   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.

KJVu: 14 They, and every wild animal after its kind, and all the cattle after their kind, and every creeping thing that creeps on the earth after its kind, and every bird after its kind, every bird of every sort.

Notes: "Beast" highlighted in the KJV verse is Strong’s H2416 with a Brown-Driver-Briggs' definition of "wild animals, on account of their vital energy and activity."

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

KJVu: 15 And they went into the ark to Noah, two by two of all flesh, in which there was the breath of life.

KJV:   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.

KJVu: 16 They all went in, male and female of all flesh, as God had commanded him . Then the LORD shut him in.

KJV:   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.

KJVu: 16 The flood was on the earth 40 days . The waters increased and lifted up the ark above the earth.

Notes: "Bare" highlighted in the KJV verse is Strong’s H5375 with a Strong’s definition of "to lift, carry, take."

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

KJVu: 18 And the waters prevailed and increased greatly on the earth . The ark was carried on the surface of the waters.

Notes:

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

KJVu: 19 The waters prevailed exceedingly on the earth , so that all the high hills that were under all of heaven were covered.

Notes: "Whole" highlighted in the KJV verse is Strong’s H3605 with a Strong’s definition of "the whole, all."

KJV:   20 Fifteen cubits upward did the waters prevail; and the mountains were covered.

KJVu: 20 The waters prevailed 15 cubits upward, and the mountains were covered.

KJV:   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 :

KJVu: 21 All flesh died on the earth, including birds, cattle, beasts, every creeping thing that creeps on the earth, and every man .

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

KJVu: 21 All in whose nostrils was the breath of life, and all that was on the dry land, died.

KJV:   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.

KJVu: 21 And every living thing which was on the face of the ground was destroyed, including man, cattle, creeping things, and birds of the air. They were all destroyed from the earth . Only Noah, and they that were with him in the ark remained alive.

Notes: "Heaven" highlighted in the KJV verse is Strong’s H8064 with a Strong’s Exhaustive Concordance definition of "air, astrologer, heavens."

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

KJVu: 24 The waters prevailed on the earth for 150 days.