OK, then all these scriptures allude to a fictious story. If it isn't true, why is it there? I'd ask your pastor to see if he thinks its true or not.
Matthew 24:37-38 New King James Version (NKJV)
37 But as the days of Noah were, so also will the coming of the Son of Man be. 38 For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark,
Luke 17:26-27New King James Version (NKJV)
26 And as it was in the days of Noah, so it will be also in the days of the Son of Man: 27 They ate, they drank, they married wives, they were given in marriage, until the day that Noah entered the ark, and the flood came and destroyed them all.
Hebrews 11:7 New King James Version (NKJV)
7 By faith Noah, being divinely warned of things not yet seen, moved with godly fear, prepared an ark for the saving of his household, by which he condemned the world and became heir of the righteousness which is according to faith.
1 Peter 3:20 New King James Version (NKJV)
20 who formerly were disobedient, when once the Divine longsuffering waited[a] in the days of Noah, while the ark was being prepared, in which a few, that is, eight souls, were saved through water.
2 Peter 2:5 New King James Version (NKJV)
5 and did not spare the ancient world, but saved Noah, one of eight people, a preacher of righteousness, bringing in the flood on the world of the ungodly;
Don't read the bible like a recipe book to quote mine. It doesn't work for any literature and only makes one seem like a kids debating Harry Potter intricacies or Dungeons and Dragons. It is a figurative work meant to impart a moral.
It is impossible that we all were one race with one language until the tower of bable. There were people here speaking different languages. So that story isn't literal. It is impossible. To deny reality is illness and delusion. That isn't what God wants.
We have a brain to use it. We need to use it like rational adults.
Also, figurative literature isn't bad. Just because the bible is figurative doesn't' mean it is wrong. There are morals to the story we are supposed to pay attention to. You miss the forest for the trees.