A friend and his wife, now in their early nineties and married for sixty-six years, wrote their family history for their children, grandchildren, and generations to come. The final chapter, “A Letter from Mom and Dad,” contains important life-lessons they’ve learned. One caused me to pause and take inventory of my own life: “If you find that Christianity exhausts you, draining you of your energy, then you are practicing religion rather than enjoying a relationship with Jesus Christ. Your walk with the Lord will not make you weary; it will invigorate you, restore your strength, and energize your life” (Matt.…