It is words from the heart that reaches the heart of God and the hearts of those called to do the work, and the heart of those receiving the blessings. Prayer is words that uplift. It is words that motivate. It is words that convict and convert. It is words that make a difference in people's capacity to do the work.
Prayer is also action.
It is not a substitute for labor. More things are wrought by prayer than the world dreams of. What are men better than sheep or goats, that nourish a blind life within the brain, if, knowing God they left no hand of prayer both for themselves and those who call them friend. Tennyson We are always praying for more laborers in the vineyard. We are always praying for more resources to get the work done.