Verse 9 The Lord knoweth, &c. This is the inference from what precedes. That is, if the Lord spared not the rebel angels, nor the old world, nor the cities of Sodom and Gomorrah, but brought terrible judgments upon them for their sins, while he saved Noah and his family, and Lot,--then the Christian might be assured that he would still continue to protect the good and condemn the wicked.