"After these things the Lord appointed other seventy also, and sent them two and two before his face into every city and place, whither he himself would come.
"Therefore said he unto them, The harvest truly is great, but the labourers are few: pray ye therefore the Lord of the harvest, that he would send forth labourers into his harvest. . . ."And the seventy returned again with joy, saying, Lord, even the devils are subject unto us through thy name." (Luke 10:1-2, 17.)
In A Marvelous Work and a Wonder, Elder LeGrand Richards wrote:
"From the first verse above, it is apparent that the Lord had previously appointed seventy, or this account would not say that he `appointed other seventy.' Of these `other seventy' we have no account in the Bible. However, the Bible does account for the calling of seventy of the elders of Israel under Moses, but this no doubt refers only to the number of elders called, rather than to the office of Seventy. (See Num. 11:16-17.)
"It will be noted that the Seventy are a traveling quorum even as the Quorum of the Twelve Apostles, and that their special calling is to assist the twelve apostles in carrying on and directing the missionary work of the Church. Since they are also special witnesses of the Lord Jesus Christ in all the world, `first unto the Gentiles and then to the Jews,' what a loss to the world that they are no more to be found in the churches of the day. This is one more reason why a restoration was necessary."