If I were called to teach, I'd give it my best.
If I were called to preach, I'd better pass test.
If I were called to reach, I'd do it with much zest.
If I were called to each, I'd surely need some rest.
We, often, hold high expectations for our spiritual leaders (as does God) to teach, minister, give guidance and direction, to be example, live what they preach, and to be available, willing, and able to meet our need. We're truly blessed when we have such a person in our life.
However, were we to multiply our need by entire membership of our church, we'd see that our expectation is somewhere between unrealistic and nearly impossible. Leadership often finds themselves between a rock and a hard place as, even for most devoted of servants, there aren't enough hours in a day.