The spiritual teaching of Noah's deliverance has always been recognised by Christians, who see in the ark a symbol of the Church into which they are admitted by baptism, God thereby graciously providing for their deliverance from the wrath and destruction due to sin. The story of the Flood was fittingly used by our Lord and the New Testament writers to convey lessons of judgment, righteousness, repentance, and faith. ...
The whole story emphasizes the righteousness of God, who is "of purer eyes than to behold iniquity," His stern punishment of sin, and His abundant mercy towards them that fear Him.
—From "A Commentary on the Holy Bible," edited by