Why is understanding sin and holiness important for Christians?

The ability to discern sin and holiness is not natural to humanity, as articulated in 1 Corinthians 2:14, which states that the natural man cannot receive the things of the Spirit. True understanding of sin—the reality that it is not merely what we do, but what we are—can only come from a spiritual perspective. Recognizing our sinful condition and the holiness of God leads us to the realization that we desperately need a Savior. Without this understanding, one may mistakenly believe that their good works can somehow rectify their standing before God. Yet, as Romans 2:14-15 illustrates, all humans are guilty, and it is God's grace alone that provides redemption through Christ.