Jacob’s testimony is much like Ether’s. God grants his servants great power to accomplish his work, although he also shows us our weaknesses so we will be humble and remember by whose grace we are able to exercise that power (Ether 12:27). Our unshaken faith, which comes by searching the scriptures, receiving revelations, and possessing the spirit of prophecy, empowers us to do the works of God, even to the point of miraculous control over trees, mountains, and waves of the sea. Some of the necessary understanding of the great and marvelous works of the Lord—the mysteries of godliness—is revealed to us in the holy temple.