Seems to be a few sources of this, I first found it in Words of Joseph Smith.
August 1, 1843, transcribed by Franklin D. Richards; Words of the Prophet, pg. 24; CHO Ms/d/4409/Misc Minutes Collection
Hiram [Smith] said Aug 1st 43 Those of the Terrestrial Glory either advance to the Celestial or recede to the Telestial [or] else the moon could not be a type [viz. a symbol of that kingdom]. [for] it [the moon] "waxes & wanes". Also that br George will be quickened by celestial glory having been ministered to by one of that Kingdom.