Revelation, 12 August 1831 [D&C 61]

Behooveth me that ye should part wherefore let them my servent  Sidney [Gilbert] & William take their former company & let them  take their Journey in haste that they may fill their mission  & through faith they shall overcome & in as much as they are  faithfull they shall be preserved & I the Lord will be with  them & let the residue take that which is needfull for  clothing let my servent sidney [Gilbert] take that which is not needfull  with them him as you shall agree & now behold for your good  I give unto you a commandment concerning these things & I  the Lord will reason with you as with men in days of old  Behold I the Lord in the begining belessed the waters but in  the last days by the mouth of my servent John I cursed  the waters wherefore the days will come that no flesh shall  be safe upon the waters & it shall be said in days to come  that none is able to go up to the land of Zion upon the  waters but he that is upright in heart & as I the Lord in  the begining cursed the land even so in the last days have  I blessed it in its time for the use of my saints that they  may partake the fatness thereof & now I give unto you a  commandment & what I say unto one I say unto all that  you shall forewarn your brethren concerning these waters  that they come not in Journeying on upon them lest their faith  fail & they are caught in her snares I the Lord hath decreed  & the destroyer rideth upon the face thereof & I revoke not  the decree I the Lord was angery with you yesterday but to day  mine anger is turned away wherefore let those whom I have  spoken that should take their Journey in haste again I say  unto you let them take their Journey in haste & it mattereth  not unto me after a little if it so be that they fill their  mission whether they go by water or by land let this be as it is  made known unto them according to their Judgement & now  concerning my servents Sidney [Rigdon] Joseph & Oliver [Cowdery] let them come  not again upon the waters save it be upon the canal while  Journeying unto their homes or in other words they shall not  come upon upon the waters <to Journey> save upon the canal Behold I  the Lord have appointed a way for the Journeying of my saints [p. 102]
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.