How do we know the doctrine of God's calling is true?

The truth of God's calling is evidenced throughout Scripture, as seen in the Apostle Paul's own experience. In 1 Thessalonians 2:1-4, Paul acknowledges that he was 'allowed of God to be put in trust with the Gospel.' This affirmation shows that God's calling is not only a matter of personal conviction but is underscored by divine validation. Historical accounts of God's servants, like Paul, who responded to God's call despite facing opposition and suffering, provide further assurance of its truth. The experiences detailed in Acts complement this understanding, illustrating the power of God's calling to transform lives and spread His message, assuring us that this doctrine is based on God's unchanging purpose and promise.