How do we know that grace is sufficient for salvation?

The Apostle Paul, in his letters, frequently emphasizes the abundance of God's grace in salvation. In 1 Timothy 1:14, Paul writes, 'The grace of our Lord was exceeding abundant with faith and love which is in Christ Jesus.' This highlights that salvation is not based on our merit but is a gift from God through His mercy. It is not our works that save us; rather, it is God's grace that redeems us. The sufficiency of grace is powerfully illustrated in Hebrews 9, which states that Christ, as our High Priest, obtained eternal redemption through His own blood, signifying that His sacrifice was complete and fully effective for the salvation of His people.