Why is understanding grace crucial for Christians?

For Christians, understanding grace is fundamental to the faith as it underscores that salvation is entirely a work of God, not based on human merit. This notion is brilliantly conveyed in Romans 5:20, which states that where sin abounds, grace abounds much more. This assurance helps believers to rest in Christ's completed work, knowing that their salvation is secure through Him. It fosters spiritual growth, as they recognize their inability to earn favor with God through works and learn to trust fully in His grace for every aspect of life.