Why is faith in Christ emphasized in Reformed theology?

In the Reformed tradition, faith is seen as a gift from God, not a work of man. Ephesians 2:8-9 emphasizes that by grace we are saved through faith, and this is not of ourselves; it is the gift of God. Believers are continually reminded that their faith does not hold the power to save, but it is Christ’s work that justifies the ungodly. This underscores the sovereign grace of God in salvation, assuring us that our acceptance before Him rests entirely on Jesus Christ and His righteousness rather than our own efforts.