5 Bible Verses about Unreadiness

For in those days before the Flood, people were eating and drinking [i.e., partaking of ordinary meals], men were getting married and women were being given away in marriage [right up] until the day Noah entered the ship. And the people [i.e., of Noah's day] did not know [when it would happen] until the Flood came and swept them all away. It will be the same way when the presence of the Son of man [arrives].

But if that slave, with evil intent, should think to himself, 'My master will not be back very soon,' and then becomes physically abusive to his fellow-slaves, and eats and drinks [at parties] with drunkards, that slave's master will return on a day that he least expects, and at an unknown hour.read more.
And [that master] will whip him to shreds and will turn him over to suffer the same fate as hypocrites do. That fate will involve crying and excruciating pain."

Then at midnight someone shouted, 'Look, the [bride and] groom are here. Come on, let us go out and meet them.' Then all the bridesmaids woke up and trimmed their lamps [i.e., removed the burnt wicks and replenished their lamps with oil]. The foolish ones said to the sensible ones, 'Give us some of your oil, because our lamps are going out.'read more.
But the sensible ones answered, 'There might not be enough for us and you, [so] instead, you should go to the store and buy some for yourselves.' And while they were away [trying] to buy olive oil, the [bride and] groom arrived, and those who were ready [to welcome them] entered the [house where the] wedding reception [was being held] and the door was shut.

"But pay attention to yourselves so that your hearts do not become overburdened by carousing, and drunkenness, and the worries of life. [If you do], that 'day' [i.e., Jesus' second coming and judgment] will arrive suddenly, like a trap [i.e., which catches an animal by surprise]. For that is the way this 'day' will arrive for everyone [else] living on the entire earth.

[For] when people are saying, "Peace," and "Safety," then [is when] destruction will come upon them suddenly, like labor pains on a pregnant woman, and they will not be able to escape it.