Then he said to his disciples, "The harvest is plentiful but the workers are few.
Ask the Lord of the harvest, therefore, to send out workers into his harvest field." (Matthew 9:37-38)
I've seen men in business, men in government who are accustomed to dealing with people and handling power,
literally stop and quiver, tremble with excitement over the realization that God had used them to reach someone for Christ.
This brings such excitement to the Christian's life.