enervate
tr.v
- To weaken or destroy the strength or vitality of: “the luxury which enervates and destroys nations” (Henry David Thoreau). See Synonyms at deplete.
A Catholic priest was discussing how the decline in the number of priests could have increased his workload, but it allowed him to involve his parishinors with lay preaching and other duties "...involving and enervating them." I surely hope this spreading of duties is actually energizing his flock.

