What does it mean that Noah was a preacher of righteousness?

Noah's designation as a preacher of righteousness implies he actively proclaimed the truth of God's judgment and salvation to a wicked society. For 120 years, amidst rampant evil, Noah warned others of impending judgment and urged them to seek refuge in the Ark, representing Christ. His faithfulness exemplifies how God calls His people to be witnesses of His grace, even when it is met with skepticism. This dynamic is reflected in 2 Peter 2:5, where Noah is referred to as a herald of righteousness, highlighting his crucial role in God's redemptive plan. As believers today, we are called to continue in this ministry, sharing the Gospel in a world that often rejects divine truth.