Revelation, 12 August 1831 [D&C 61]

& behold this is the way that after they leave the canal they shall  Journey by land in as much as they are commanded to Journey by  & go up unto the land of Zion & they shall do like unto the  children of Israel pitching their tents by the way & behold this  commandment you shall give unto all your brethren neverthe less unto whom it is given power to command the waters unto  him it is given by the spirit to know all his ways wherefore  let him do as the spirit of the living God commandeth him  whether upon the land or upon the waters as it remaineth with  me to do hereafter & unto you it is given the course of the saints or  the way for the saints of the camp of the Lord to Journey & again  verily I say unto you my Servents Sidney [Rigdon] Joseph & Oliver shall not  open their mouths in the congregations of the wicked untill they  arrive at cincinnati & in that place they shall lift up their voices  unto god against that People yea unto him whose anger is kindelled  against their wickedness a people which is well ripened for distruc tion & from thence let them Journy for the congregations of their  brethren for their labours even now are wanted more abundantly  among them then among the congregations of the wicked & now  concerning the residue let them Journey & declare the word among  the congregations of the wicked inasmuch as it is given & in as much  as they do this they shall rid their garments & they shall be spot less before me & let them Journey together or two by two as  seemeth them good only let my servent reynolds [Cahoon] & my Servent  Samuel [Smith] with whom I am well pleased be not seperated untill  they return to their homes & this for a wise purpose in me  & now verily I say unto you & what I say unto one I say unto  all be of good cheer little children for I am in your midst  & I have not forsaken you & in as much as ye have humbe lled yourselves before me the blessings of the kingdom is yours  gird up your loins & be watchfull & be sober looking forth  for the coming of the Son of man in an hour you think not  pray always that you enter not into temptation that you  may abide the day of his coming whether in life or in death  even So Amen [p. 103]
In summer 1831, JS traveled to western Missouri and spent nearly a month there. After consecrating land for Zion, the New Jerusalem, and its temple, JS and others prepared to return to Kirtland, Ohio. They were three days into the journey, the first leg of which was to be via the Missouri River to St. Louis, Missouri, when their canoe nearly capsized. This revelation warned of the hazards of river travel and provided instruction on JS’s potential encounters with nonbelievers en route to Ohio.
John Whitmer copied the text into Revelation Book 1, where it is designated “64 Commandment given Aug. 12th 1831,” sometime in September 1831. Sidney Gilbert also recorded a copy in his revelation notebook in September 1831. The 1833 Book of Commandments dates the revelation to August 1831 on the bank of the Missouri River. The 1835 Doctrine and Covenants gives the same date but no location.