"...never has man come before me with such exceeding faith as thou hast; for were it not so ye could not have seen my finger. Sawest thou more than this? And he answered: Nay; Lord, show thyself unto me.... And never have I showed myself unto man whom I have created, for never has man believed in me as thou hast." (Ether 3:9-10, 15)
"And it was by faith that the three disciples obtained a promise that they should not taste of death; and they obtained not the promise until after their faith. And neither at any time hath any wrought miracles until after their faith; wherefore they first believed in the Son of God. And there were many whose faith was so exceedingly strong, even before Christ came, who could not be kept from within the veil, but truly saw with their eyes the things which they had beheld with an eye of faith, and they were glad.
"And behold, we have seen in this record that one of these was the brother of Jared; for so great was his faith in God, that when God put forth his finger he could not hide it from the sight of the brother of Jared, because of his word which he had spoken unto him, which word he had obtained by faith. And after the brother of Jared had beheld the finger of the Lord, because of the promise which the brother of Jared had obtained by faith, the Lord could not withhold anything from his sight; wherefore he showed him all things, for he could no longer be kept without the veil." (Moroni, Ether 12:17-21)