The Lord warned Noah about the coming worldwide deluge. He gave Noah specific instructions on how to build the ark, so that he, his family, and representatives from each animal kind would be saved from the flood.
Do you believe this account? Jesus did. He often referred to Noah and the flood when He spoke of the last days and His second coming:
“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).