... I met in the house of the Lord with the quorum of the Seventies. ... We had a spiritual meeting. Elder Brigham Young one of the twelve gave us an interesting exhortation & warned us not to murmer against Moses (or) Joseph or the heads of the Church.
[Source: Wilford Woodruff's Journal: 1833-1898 Typescript, Volumes 1-9, Edited by Scott G. Kenney, Signature Books 1993, http://amzn.to/newmormonstudies]