It's important to regularly review the fundamentals in anything you do in life. And because the world and our sinful flesh continually are telling us that we have to make ourselves right with God and that life is about living for yourself, we need to be reminded of the fundamentals of Christianity too: that we are right with God only by his grace, and, our lives in this world are not about us. And there, by God's grace, there alone can we find peace and joy and purpose for life and eternity.