Why is it important for Christians to understand they cannot earn salvation?

Christians must grasp the truth that salvation cannot be earned through works or personal efforts to prevent falling into the trap of self-righteousness. In Zephaniah, the error of mixing grace with works leads to condemnation. The distinction between grace and works is vital; our own righteousness is considered iniquity in the eyes of God. Hence, recognizing our inability is the first step toward relying fully on Christ's righteousness, showing that our salvation is a gift of grace and not a result of our deeds, which ultimately honors God.