Hebrews 12:28 says, " Wherefore we receiving a kingdom which cannot be moved, let us have grace, whereby we may serve God acceptably with reverence and godly fear:" The definition of grace is: "unmerited, unearned favor." God gives this to all mankind and gloriously saves those who receive His grace. He expects us to do the same.
This study comes from the entire chapter of Hebrews 12, and speaks to how we deal with others who persecute us, how we should live, and how we treat others. We must have grace and show grace if we are going to represent God's kingdom and the gospel well.
Therefore, since we are receiving a kingdom which cannot be shaken, let us have grace, by which we may serve God acceptably with reverence and godly fear. For our God is a consuming fire.
- Hebrews 12:28-29 (NKJV)