Why is grace underlined as crucial for Christians?

Grace is a fundamental concept in Christian theology, underscoring the unmerited favor of God towards sinners. Ephesians 2:8-9 clarifies that we are saved by grace through faith, not by our works, so that no one can boast. This truth should cultivate in believers a deep sense of gratitude and humility, recognizing that we contribute nothing to our salvation. Instead, we rely fully on the finished work of Christ, who exchanged His riches for our poverty, enabling us to receive His righteousness freely, just like the poor who can come to Him without any price (Isaiah 55:1).