Sailors and mariners become wise, useful, and qualified for their stations only by experience. Storms, tempests, and hurricanes have to occur in order to give them that experience. If all was calm, and storms never arose at sea, where would the mariner get the experience that is necessary for him to have, that when storms do occur and difficulties arise, when the ship sails out upon the ocean, he shall be prepared to manage and guide his his vessel safely into port. If there are individuals on board that have never experienced storms, or perhaps have never ventured away from land before, when storms arise, you see that trepidation of spirit that you do not witness in those that have had experience.
So it is with ourselves in the Gospel of Jesus Christ, we have to learn by the things that take place around us and act in the stations assigned us by the circumstances that transpire and the experience we gain.
President Lorenzo Snow, Journal of Discourses 5:322