Grace, a central concept in Christian theology, has been at the heart of theological debates and spiritual reflection since the time of the Apostles. It is the unmerited favor of God, a gift freely given to humanity, enabling believers to grow in holiness, salvation, and a deeper relationship with the Divine. In Catholic doctrine, grace is viewed not merely as an abstract theological notion, but as the very means through which God engages with humanity, transforming lives, renewing the soul, and guiding it toward eternal communion with Him. Grace is foundational to understanding salvation, sanctification, and the entirety of Christian life. From the early Church Fathers to the magisterial teachings of the Catholic Church, grace has been interpreted and articulated in varied yet harmonious ways.