What does it mean that salvation is conditioned on Christ?

In Reformed theology, salvation is comprehensively understood as being conditioned solely on the person and work of Christ. This is encapsulated in 2 Corinthians 1:20, stating that all the promises of God are fulfilled in Him. This principle emphasizes that no amount of human effort, faith, or repentance can earn salvation; instead, it is entirely a gift of God's grace. Christ, as the surety of the covenant, fulfills all the responsibilities required for salvation, ensuring that those whom He redeemed will indeed come to faith as part of His divine plan.