One difficult part of growing older is the fear of dementia and the loss of short-term memory. But Dr. Benjamin Mast, an expert on the topic of Alzheimer’s disease, offers some encouragement. He says that patients’ brains are often so “well worn” and “habitual” that they can hear an old hymn and sing along to every word. He suggests that spiritual disciplines such as reading Scripture, praying, and singing hymns cause truth to become “embedded” in our brains, ready to be accessed when prompted. In Psalm 119:11, we read how the power of hiding God’s words in our heart can…