Well, WPM made a good point, and you may have missed it. Jesus said this:
Luke 17.27 People were eating, drinking, marrying and being given in marriage up to the day Noah entered the ark. Then the flood came and destroyed them all.
And Genesis says this:
Gen 7.11 In the six hundredth year of Noah’s life, on the seventeenth day of the second month—on that day all the springs of the great deep burst forth, and the floodgates of the heavens were opened. 12 And rain fell on the earth forty days and forty nights.
13 On that very day Noah and his sons, Shem, Ham and Japheth, together with his wife and the wives of his three sons, entered the ark.
So what we have here is Jesus saying the worldly celebration ended on the day Noah entered the ark, at which time the Flood came and destroyed them all. And in Genesis it is said that on the day Noah and his family entered the ark, on the 17th day of the 2nd month, the Flood began.
No, you are breaking up the thoughts to force fit your point. You and WPM need a verse from Scripture that states it took 7 days to enter the ark. Without your proof text you are literally dead in the water. Now you could point out there were not punctuation marks, and they were added even in modern Hebrew Scriptures. You are still going past what most have accepted as breaks in the thought.
Verse 13 goes with verse 14, not 12.
"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; 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."
"And they went in unto Noah into the ark, two and two of all flesh, wherein is the breath of life.
"And they that went in, went in male and female of all flesh, as God had commanded him: and the Lord shut him in."
Then again we see the phrase:
"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."
Verse 12 is the end of the thought from verse 11 or 5.
"And Noah did according unto all that the Lord commanded him. And Noah was six hundred years old when the flood of waters was upon the earth. 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. Of clean beasts, and of beasts that are not clean, and of fowls, and of every thing that creepeth upon the earth, There went in two and two unto Noah into the ark, the male and the female, as God had commanded Noah."
"And it came to pass after seven days, that the waters of the flood were upon the earth."
"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. And the rain was upon the earth forty days and forty nights."
That is the end of the thought with a period. It is not part of the next sentence, which starts with a preposition:
"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; 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."
You are saying that Noah disobeyed God and waited for the 7th day to enter the ark, if you move the prepositional phrase from the next sentence and place it in the previous sentence.
What is the big deal that God shut the door 6 days before the Flood came? Personally I think that Enoch was a type of the church and Noah was a type of Israel, obedient to God. The rapture would have happened prior to wickedness even getting out of hand. Israel still goes further, into troublesome times than the church does, but is removed while Satan is granted his 42 month empire.
Jesus does not tell us the meaning of the 6 days, but either Noah obeyed God the first day or waited in disobedience until the very last minute, which would also apply to pre and post positions, as if Jesus would let you all remain on the earth post the Second Coming. The Second Coming is the 6th Seal. The final harvest is after the 7th Seal, and the Lamb's book of life has been opened to remove names of people who will soon be tossed directly into the LOF.
So I would say the ark being shut is in direct comparison of the Lamb's book of life opened. All have been safe, inside, until the book was unsealed. Noah was safe inside a sealed ark, while the rest of the world were stuck outside. Now, no one could enter the ark, after the first day, even if they wanted to. After the 7th Seal, many will be booted from God's redemption.
No one knows if it will be an exact 6 years or 6 days after the 6th Seal is opened. But many today hold to the year day principle. Israel was punished 40 years in the wilderness, for the 40 days of spying out the land and giving a bad report. The way you all compare Scripture, any thing goes. But you have not given a proof text saying it took all 7 days to enter the ark. If we did that sort of interpretation, you all would cry conjecture.
You can try to convince us that the punctuation marks have been placed in the wrong spots, but who would we blame? Did the Hebrew textual critics place them according to English understanding, or did the English follow the Hebrew addition. The Torah itself has no such divisions. Modern Hebrew has added them to modern Hebrew versions of the Torah.