2 Peter 2:5

An Understandable Version (2005 edition)

and if He did not spare the ancient world of Noah’s day, when He brought a flood on those ungodly people (though Noah, a preacher of righteousness, and seven other people, were saved from it);

Cross References

Hebrews 11:7

By [having] faith, when Noah was warned [by God] about conditions that had not yet been seen [i.e., regarding events of the coming Flood], he acted out of reverent concern [for God] by constructing a ship to save [i.e., rescue] his household [from the Flood waters]. By this [i.e., his faith which led to action], Noah condemned the world and inherited righteousness because of his faith.

2 Peter 3:6

[And] it was by water that the world, which existed at that time, perished in a great flood [of Noah’s day]!