If he did not spare the ancient world when he brought the flood on its ungodly people, but protected Noah, a preacher of righteousness, and seven others;
NIV
And He spared not the ancient world, but preserved Noah, a preacher of righteousness, with seven other persons, when He brought a flood upon the world of ungodly [people]. [Gen. 6-8; I Peter 3:20.]AMP
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;
KJV