Christianity teaches that salvation is a sovereign work of God's grace in Christ to rescue sinners, while Buddhism teaches that liberation (Nirvana) is achieved through personal effort and the extinguishing of desire to escape the cycle of suffering.
Christianity is grounded in the existence of a personal, Triune God—Father, Son, and Holy Spirit—who is the Creator and Sustainer of all things. In the Reformed tradition, we recognize that our fundamental problem is not merely suffering, but sin. As stated in the Heidelberg Catechism #7, our nature has become corrupt through the fall of our first parents, leaving us wholly incapable of doing any good and inclined to all wickedness. Buddhism, conversely, generally operates as a non-theistic system that views the core problem as ignorance and craving (tanha) within a cycle of reincarnation (samsara), aiming for the cessation of suffering rather than reconciliation with a personal Creator. While the Buddhist seeks to overcome the self, the Christian acknowledges that they belong to their faithful Saviour, Jesus Christ, who has fully satisfied for all their sins (Heidelberg Catechism #1).
The most vital difference lies in how one is 'saved' or liberated. Christianity is a religion of Sola Gratia (Grace Alone). We are righteous before God only by a true faith in Jesus Christ, not by any merit of our own (Heidelberg Catechism #60). Salvation is the announcement of what God has done in the life, death, and resurrection of Christ. In contrast, Buddhist paths (such as the Eightfold Path) emphasize personal discipline, meditation, and ethical living as the means to achieve enlightenment and end suffering. We must approach those who hold to other worldviews with the gentleness and respect found in 1 Peter 3:15, yet hold firmly to the exclusivity of Christ: 'And in none other is there salvation: for neither is there any other name under heaven, that is given among men, wherein we must be saved' (Acts 4:12, ASV).