Revelation given through Joseph Smith, Jr., prophet and seer to the church, April 1830, at Manchester, New York. This instruction came in answer to Joseph Smith's inquiry concerning the status of those who desired to unite with the church and who had already been baptized.
[Sec 20:1a] Behold, I say unto you, that all old covenants have I caused to be done away in this thing, and this is a new and everlasting covenant; even that which was from the beginning.
[Sec 20:1b] Wherefore, although a man should be baptized an hundred times, it availeth him nothing; for you can not enter in at the strait gate by the Law of Moses, neither by your dead works;
[Sec 20:1c] for it is because of your dead works, that I have caused this last covenant, and this church to be built up unto me; even as in days of old.
[Sec 20:1d] Wherefore, enter ye in at the gate, as I have commanded, and seek not to counsel your God. Amen.