How do we know great faith is true?

Great faith is characterized by a profound understanding of personal unworthiness, which the centurion exemplifies when he approaches Jesus. He does not see himself as deserving of Christ's attention, which aligns with the biblical view that salvation is not earned but granted by God's grace. This faith acknowledges Christ’s sovereign power and ability to act according to His will, as seen in the centurion's request for healing. The Lord's marvel at the centurion's belief affirms that such great faith is true and is recognized by God, highlighting the remarkable nature of believing in Christ's authority and power to save.