A recommend is required to go up to Zion. This recommend is barely spiritual, but far more financial in nature. The saints will remember that the bishop in the land of Zion will not receive any, as wise stewards, without they bring a recommend from the bishop in Ohio, or from three elders. The elders, therefore, will be careful not to recommend and send up churches to this place without first receiving information from the bishop in Ohio, or in the land of Zion, that they can be accommodated when they arrive so as to be settled without confusion, which would produce pestilence.
[Source: Exploring Mormonism: Bishop's Interview Timeline, http://www.exploringmormonism.com/bishops-interview-timeline/]