Many things can contribute to the stability of a church.
Leadership can bring the best or the worst out of people.
Statistics show that a congregation which sits under the same pastor's ministry for three years will begin to emulate his character. Unfortunately, if leadership is corrupt, pretentious, domineering, or so forth, a congregation will begin to take on these traits. In order for a church to become stable it must have leadership with stability, maturity, and integrity. The pastor needs to be authoritative, but gentle. He must be a peacemaker, sound and impartial in his decision making.