If miracles have ceased, and if angels no longer minister to people on earth, then we are living in a time of great apostasy and in a day of unbelief. Where faith is, there are gifts and wonders and miracles. There are angels. Where these things- the signs of the believers- are not found, there the fruits of the gospel are not to be found, and all is vain, meaning empty and hollow. (See 2 Nephi 27:23; Ether 12:12.)