Why did God save Noah and his family?
Because someone was needed for the genealogy of Jesus!
"...which was [the son] of Noe, which was [the son] of Lamech, which was [the son] of Mathusala, which was [the son] of Enoch, which was [the son] of Jared, which was [the son] of Maleleel, which was [the son] of Cainan, which was [the son] of Enos, which was [the son] of Seth, which was [the son] of Adam, which was [the son] of God" (Lk. 3:38).
How did God save Noah and his family?
God saved them by His grace!
"But Noah found grace in the eyes of the LORD" (Gen. 6:8).
"For by grace are ye saved through faith; and that not of yourselves: [it is] the gift of God: not of works, lest any man should boast" (Eph. 2:8-9).
Was Noah a just or righteous man?
He was after God imputed Christ's righteousness to him!
"These [are] the generations of Noah: Noah was a just man [and] perfect in his generations, [and] Noah walked with God" (Gen. 6:8-9).
"As it is written, There is none righteous, no, not one: there is none that understandeth, there is none that seeketh after God" (Rom. 3:10-11).
"For He hath made Him [to be] sin for us, who knew no sin; that we might be made the righteousness of God in Him" (2 Cor. 5:21).
Are you and I just or righteous?
We are after we trust in the Lord Jesus!
"For therein is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith" (Rom. 1:17).
"That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved" (Rom. 10:9).
"As it was in the days of Noah," also applies to God's offer of salvation!