Genesis 9:28

And Noah lived after the flood three hundred and fifty years.

Noah was a literal person who lived, and the Flood was a literal fact of history, while Genesis is the inspired, divine words of God pronounced divine by Christ to answer doubt, so the Old Testament cannot be divorced from the New Testament. The verse records that Noah lived 350 years after the Flood. That long post-Flood life illustrates the exceptional longevity of the early patriarchs, standing at the close of the time from Adam to Noah when, with few exceptions, men lived nearly a thousand years, though the average human lifespan had begun to decrease. Since the days of Noah the average length of life has been tapering while disease has been steadily increasing through successive generations and mortality has grown to a fearful extent through continued violation of the laws of life, as seen when those afflicted with all manner of diseases were brought to Christ from every town, city, and village for healing.

Throughout those 350 years Noah continued as the faithful preacher of righteousness, and together with Shem living 500 years gave their descendants going forth to found nations in different parts of the earth opportunity to become acquainted with God's requirements and the history of His dealings with their fathers, so that the light of truth might shine undimmed to succeeding generations. Their unwillingness to listen to these unpalatable truths and their lack of desire to retain God in their knowledge was loss to themselves. By the confusion of tongues they were in great measure shut out from intercourse with those who might have given them light. Noah's day prefigures the present age before Christ appears in the clouds of heaven, with human nature uninfluenced by the Spirit of God the same then as now and the character of that generation marking this age.