How do we know the effectual calling is true?

In the sermon, the preacher emphasizes that the effectual call of God is powerful and transformative. It highlights that when Christ called the demoniac in Gadara, he could not resist this call. The man ran to Jesus and worshipped Him, which showcases the compelling aspect of God's effectual call. This is not merely an invitation that one can refuse; it is a divine action that changes a person's heart and inclines them towards Christ. God’s call is shown to be irresistible in this narrative, affirming that God’s purpose will prevail in the lives of His chosen.