How do we know God's grace superabounds over sin?

In Romans 5:20, Paul asserts that where sin abounded, grace did much more abound. This principle illustrates that God's grace is not merely an adequate response to sin, but an overwhelming force that supersedes it. The grace of God reigns through righteousness, leading to eternal life by Jesus Christ our Lord. It showcases God's sovereign plan where the severity of human sin only highlights the magnificence of divine grace. This understanding leads us to appreciate that grace is not a reaction to sin, but rather God's pre-existing purpose to redeem His people.