Ether was the last Jaredite prophet, son of Coriantor and a descendant of Jared, who came from the great tower at the time the Lord confounded the language of the people and crossed to the promised land (Ether 1:6-7, 33). He prophesied during the reign of Coriantumr, the final Jaredite king.
Ether could not be restrained because of the Spirit of the Lord in him (Ether 12:2). He prophesied to the people from morning until sundown, calling them to believe in God and repent or be destroyed (Ether 12:3). He taught that whoever believes in God may hope for a better world and a place at the right hand of God (Ether 12:4).
His prophecies ran from the beginning of man to the days of Christ, and included a New Jerusalem to be built on the promised land by the remnant of the seed of Joseph, alongside the rebuilding of the old Jerusalem (Ether 13:3-12). The people rejected him, esteemed him as nothing, and cast him out. He hid in the cavity of a rock by day and came out at night to view and record the destruction coming on the people (Ether 13:13-14).
In the second year, the word of the Lord directed Ether to tell Coriantumr that if he and his household repented, the Lord would spare the people; otherwise all would be destroyed except Coriantumr himself, who would live only to see another people receive the land and would be buried by them (Ether 13:20-21). Coriantumr and his people did not repent, and the Jaredite wars ended in the nation’s destruction, with Coriantumr the sole survivor (Ether 15:19).
After the words of the Lord were all fulfilled, Ether finished his record and hid it where the people of Limhi later found it (Ether 15:33; Mosiah 8:9). His last written words state that whether he was translated or suffered death in the flesh did not matter, so long as he was saved in the kingdom of God (Ether 15:34).