What does it mean that Noah was perfect in his generation?

In Genesis 6:9, it states that 'Noah was a just man, perfect in his generations.' The term 'perfect' here does not imply sinless perfection but rather completeness or moral integrity. Noah's righteousness was derived from God's grace, making him justified in God's sight. As all believers are found complete in Christ, Noah exemplifies a life that, while sinful, is covered by grace and enabled to walk with God. His 'perfection' illustrates how believers are seen as righteous not due to their own actions but because of the imputed righteousness of the Messiah, fulfilling the requirements of God's law on their behalf.