What does it mean that there is none good but God?

When it is stated that there is none good but God, it underscores the biblical teaching that humanity is inherently fallen due to sin. The works of men, even those seen as good in a worldly sense, are tainted by selfish motives and inherently flawed. This realization drives us to acknowledge our need for divine grace and highlights the necessity of Christ, who alone is good and perfect. By faith in Him, believers are transformed, and His righteousness is counted as their own, allowing them to stand blameless before a holy God.