The secret of success in the ministry is very simple. It is real connection with God, vital union with Christ. This is just the most difficult thing to maintain in fullness of life. The strains of life pull us away. Dust gathers about our heads and in our eyes. Clouds gather and the sun does not shine upon us. God seems to slip away from us and we are left with our weakness and the criticism of the people. It is not human weakness that is a source of strength. It is only when the power of God charges the empty vessel that it becomes a dynamo.
A. T. Robertson, The Glory of the Ministry