How do we know the righteousness of Noah points to Christ?

The righteousness of Noah is emphasized in Genesis 6:9, where it states that Noah was a just man. This righteousness is not equivalent to sinlessness but rather is akin to the righteousness believers attain through faith in Christ. Romans 4:6 teaches that righteousness is imputed to those who believe, reflecting how Noah’s faith was representative of the faith that justifies us today. In this way, Noah's life exemplifies the grace that underpins our relationship with God through Jesus Christ, showcasing that true righteousness comes not from our deeds but through faith in Christ's redemptive work.