How does God's grace relate to believing in His Son?

The dynamic between God's grace and belief is highlighted in the sermon, demonstrating that it's only by grace that individuals can acknowledge God's record of His Son. The preacher emphasizes that while humans often take in human testimony without question, they struggle with accepting divine truth due to their unregenerate state. It is through the sovereign grace of God that one can believe the record He has provided, illustrating that saving faith itself is a gift from God rather than a mere human exercise (Ephesians 2:8-9).