How does Noah's obedience illustrate faith?

Noah's obedience is a direct manifestation of his faith in God's warning. He spent 120 years preparing the ark, showing not only a belief in God's promise but also an active trust that prompted him to work. This aligns with the Reformed understanding of faith as being intimately connected to works; while we are saved by grace through faith alone, genuine faith produces obedience. Noah's actions condemned the world, underscoring that faith leads to a lifestyle that reflects God's righteousness—an essential aspect of sovereign grace theology, which emphasizes living out one's faith amidst a disobedient society.