What is the significance of Noah being called righteous?

Noah is frequently described as a righteous man in the eyes of God, particularly in Genesis 6:9, where it states that he found grace in the sight of the Lord. Noah’s righteousness does not stem from his own merit, but rather signifies God’s sovereign choice to save him amidst a corrupt world. This righteousness is juxtaposed with the sinfulness of humanity at large, showcasing a clear distinction between those who are chosen by God for salvation and those who are left to their wickedness. Noah's life serves as an early illustration of imputed righteousness, prefiguring the ultimate righteousness that would be given through Christ, the true Ark of safety for believers.