2 Peter 2:5
"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;"
Cross References (ranked by relevance)
Hebrews 11:7
11
By faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house; by the which he condemned the world, and became heir of the righteousness which is by faith.
2 Peter 3:6
11
Whereby the world that then was, being overflowed with water, perished: