How do we know God's grace is effective?

The effectiveness of God's grace is illustrated in the doctrine of election and Christ's redemptive work. In Ephesians 1, Paul explains that believers were chosen in Christ before the foundation of the world, signifying that God's grace is both purposeful and achieved in the work of Christ. His grace triumphs over our sinful condition, leading us from death to life. This effectual grace guarantees that all whom God has chosen will come to faith and be saved through the merits of Christ's sacrificial death and resurrection.