What does the Bible teach about grace and sin?

The relationship between grace and sin is beautifully encapsulated in Romans 5:20, which states that where sin increased, grace abounded all the more. This illustrates that God's grace is sufficient to cover the multitude of our sins. In the context of sovereign grace theology, it highlights God's sovereign purpose in salvation — that even the most grievous sins cannot outsmart the abundance of His grace. This abundance of grace leads us to eternal life through Jesus Christ, showcasing the transformative power of the gospel in overcoming sin.