Revelation, 8 June 1831 [D&C 53]

Behold I my the Lord who was crusified for the sins of the world  giveth unto you a commandment that you shall forsake the  world take upon you mine ordinances even that of an Elder  to Preach faith & repentance & remission of sins according  to my word & the reception of the Holy spirit by the laying on  of hands & also to be an agent unto this Church in the Place  which shall be appointed by the Bishop according to command ments which shall be given hereafter & again verily I say unto  you you shall take your Journey with my servent Joseph  & sidney [Rigdon] Behold these are the <firist> ordinances which you shall  receive & the residue shall be made known unto you in a  time to come according to your labour in my vinyard  & again I would that ye should learn that it is hi only  who is saved that endureth unto the end even so amen [p. 90]
This revelation followed soon after the historic June 1831 conference, where several elders were assigned to travel separate routes and preach and others were commissioned to accompany JS to Missouri to identify the location for the New Jerusalem. Not among those originally appointed to travel west, Sidney Gilbert personally approached JS two days later to learn the Lord’s will for him. This revelation directed Gilbert to travel to Missouri with JS but also called for his ordination as an elder and his appointment as business “agent” for the church, a position suited to his considerable mercantile experience.
John Whitmer copied the text  into Revelation Book 1, where it is designated “56th Commandment June 8th 1831,” sometime in June 1831. Sidney Rigdon and Sidney Gilbert also made copies in summer 1831. The 1833 Book of Commandments dates the revelation to June 1831 at Kirtland, Ohio, while the 1835 Doctrine and Covenants gives the same date but no location.