For grace is the most confusing paradox in theology. The tension that the paradox of grace causes has to do with freedom and responsibility. Most everyone in the religious world holds a view that cancels the other. It is how we handle each that defines the other. And how we handle each is what defines life for each of us.
Some proclaim freedom excludes responsibility.
Others proclaim that personal responsibility excludes freedom. It is the heat that is caused over the tension between freedom and responsibility that necessitates grace. Salvation involves the maximum freedom and maximum responsibility. Grace says both are equally binding. God is sovereign and he is free to do what he wishes.