Every Christian I’ve met who believes they can lose their salvation has always given a reason that involves them. What if I commit suicide? What if I get a divorce? What if I stop believing? What if I…? You fill in the blank there, but it’s all the same. Every hypothetical scenario puts ourselves at the center of the equation. But our faithfulness to God is an old-covenant problem that is solved by the new.
God Without Religion, Baker Books, 2011, 30-31