How do we know irresistible grace is true?

The doctrine of irresistible grace asserts that God's grace effectively brings about the salvation of those He has chosen. This is demonstrated in the transformation of Zacchaeus, who, upon hearing Jesus' personal call, responds joyfully and without hesitation. The Almighty God influences and compels the will of those He saves, creating in them a new heart and the desire to come to Christ. Romans 8:30 expresses this process, stating, 'Moreover whom he did predestinate, them he also called; and whom he called, them he also justified; and whom he justified, them he also glorified.' This divine sovereignty in calling and saving ensures that those chosen by God will come to faith.