It is when people try to be serious that they reveal themselves. To Elvis, being serious entailed singing the sacred music he grew up on. His gospel records are accordingly moving in a way that the secular ones could never be. Which is not to say they're all great; they're not. But many are fantastic in the way that only Elvis records can be. This four-disc set may be more than you need (in which case try Ultimate Gospel) but for some of us, more is always desirable.
Pick of the Album: 'Peace in the Valley': white boy cries in the wilderness