Could have??? LOL.
I am discussing what the scripture actually says, not speculation.
By faith Noah, being divinely warned of things not yet seen,
moved with godly fear, prepared an ark for the saving of his household, by which he condemned the world and became heir of the righteousness which is according to faith.
Hebrews 11:7
Based on this scripture, and specifically the phrase that says
prepared an ark for the saving of his household, Noah and his family was saved by Noah's obedience to move with godly fear and build the Ark.
Therefore Noah and his family were saved by what Noah did, and not what God said.
Noah was divinely warned of things to come and obeyed to the saving of his household.
Faith without the work of obedience is dead.
moved with godly fear, prepared an ark for the saving of his household.
Same principle of the law of faith applies to the Gospel.
Repent for the kingdom of God is at hand, or you will likewise perish.
Obey the Gospel and repent or you will perish with Satan your lord.
JLB