According to the Book of Mormon, Ether () was a Jaredite prophet, one of the last surviving Jaredites, and the primary author of the Book of Ether.
Ether's account, which Moroni abridged into the Book of Ether, is found in the 24 plates discovered by the people of Limhi in the Book of Mosiah.
Ether's grandfather Moron had been king of the Jaredites. Moron was overthrown and "dwelt in captivity all the remainder of his days". Ether's father, Coriantor, was born while his father was captive and Coriantor "dwelt in captivity all his days". Ether "was a prophet of the Lord" and "lived in the days of Coriantumr; and Coriantumr was king over all the land". He sees and prophesies many things but the people reject his teachings because they refuse to believe what they have not seen for themselves. Because of their rejection, Ether retreats to hide in a cave and record what happens to his people. He is later sent by the Lord to prophesy to King Coriantumr that he and his family can be saved if they will repent, but is again rejected. At the end of his record, Ether reflects on whether he will be translated to heaven or die like a normal man.
According to Daniel H. Ludlow, it is not clear whether or not the Jaredites were commanded by the Lord to practice polygamy. The following evidences have been cited which might indicate that they did practice polygamy:
shows a pattern repeated many times in the Book of Mormon:
The Jaredites were able to be wealthy and remain righteous for more than 100 years (see v. 15-25).
In four claims about secret combinations are made:
In claims about the New Jerusalem are made:
The last prophet called of God to warn the Jaredite nation and to witness against them was Ether, the son of Coriantor. H. Donl Peterson notes that Moroni could have empathized with Ether, since both were prophets of God sent to preach to a people who were "past feeling" and who "did reject all the words of the prophets" (). Both men were the last of their once great civilizations, and both were called upon to record their final struggles and then were charged to be responsible for preserving the precious records of their fallen people.