“And spared not the old world, but saved Noah the eighth person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;”
King James Version (KJV)
2:5 And spared not the old, the antediluvian, world, but he preserved Noah the eighth person - that is, Noah and seven others, a preacher as well as practiser, of righteousness. Bringing a flood on the world of the ungodly - Whose numbers stood them in no stead.
2Pe 2:5 And spared not the old world. The case of the antediluvians furnishes the second example of God's swift justice. But saved Noah the eighth [person]. "But preserved Noah with seven others" (Revised Version). God did not then forget the righteous. A preacher of righteousness. By example as well as by word. See Ge 7:1 1Pe 3:20.