Vital Signs: How to Monitor Your Spiritual Health turns to the passage in John's gospel in which Jesus prays to His Father, asking that His followers know unity with one another in their love for God. Author Harley Ihm finds in this prayer for unity the inspiration for uncovering five vital signs that indicate one's spiritual health. He describes the signs that point to the spiritual vitality of one's heart, vision, mind, body, and community.

Vital Signs devotes a chapter to each of these five signs of spiritual vitality, drawing upon key biblical passages,...