As in the days of Noah

"But as the days of Noah were, so also will the coming of the Son of Man be. 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, and did not know until the flood came and took them all away, so also will the coming of the Son of Man be." (Matt. 24:37-39).

To learn more how to prepare, go to: https://theheavenlyjerusalem.org/the-meaning-and-reality-of-baptism/