Why is relying on grace important for Christians?

Relying on grace signifies an understanding that we bring nothing to the table in our salvation or sanctification. As stated in Romans 9:16, it depends not on human will or exertion, but on God who shows mercy. This reliance leads to humility and a recognition of God's sovereignty in all aspects of life. When Christians depend solely on grace, they are freed from the burdens of legalism and self-reliance, allowing them to fully appreciate the finished work of Christ, which leads to a genuine expression of gratitude and service for the Lord.