How did the Reformation bring about a greater understanding of the glory and greatness of God?

Kevin Swanson explains in this video that man wants to see himself as the source of truth, ethics, salvation. He wants to see himself as the hinge point in saving himself from his sins. He wants to be the means by which he is saved. But, we are saved by grace alone. 

The Reformation brought God back into the center. People began to see God as all-sovereign over all of life. There are points where man does not want God to be sovereign. Yet, man will never save himself – only God can save us. Thus, we look to God as the sovereign source of our salvation. We are saved by grace alone.  

Ephesians 2:8-9 (NKJV) - "For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast."

Well, I think bringing the centrality of the gospel, the centrality of God, the grace of God in salvation, the centrality of truth and ethics as it comes from the Word of God, as it comes from God Himself. These are the things that are so powerful. Man wants to see himself as his own source of truth. Man wants to see himself as a source of ethics. He wants to see himself as a source of ethics.

He wants to see himself as a source of salvation. He wants to in some way see himself as the hinge point in saving himself from his sins. He wants his own choice to be the means by which he is saved. And as it turns out, we are saved by grace, and that not of ourselves, it is the gift of God. So the Protestant Reformation brought God back into center and we began to see God as all sovereign over all of life and all of our salvation, our redemption.

There are points at which man doesn't want God to be the sovereign. He wants himself to be the ultimate determinant of his reality, including the ultimate determinant of his salvation. Well, it turns out man will never save himself. Man will never save himself if he is the hinge point. Only God can save us.

And so therefore, we look to God as the sovereign source of our salvation. We are saved by grace, and that not of ourselves, it is the gift of God, not of works lest any man should boast.