How do we know that God's calling is effective?

The effectiveness of God's calling is underscored throughout Scripture, confirming that His divine purpose will ultimately succeed. Romans 8:28-30 details the unbreakable chain of salvation, stating that those whom God foreknew, He also predestined and called. The progression demonstrates that God's calling is not merely an invitation but an efficacious act that leads to justification and glorification.

Furthermore, Acts 13:47-48 highlights that as many as were appointed to eternal life believed when Paul preached. This underscores the idea that the effective call of God guarantees a response from those chosen. God's grace ensures that the called will not only hear the gospel but respond with faith, as illustrated in 2 Thessalonians 2:13-14, where it is affirmed that God chose individuals for salvation through sanctification and faith in the truth. Hence, God's calling is both purposeful and powerful, culminating in the fulfillment of His promises.