In 1833, Granger joined the gathering of Latter Day Saints in Kirtland, Ohio. He was assigned by Joseph Smith to serve another mission in the eastern United States with Samuel Newcomb. When Granger returned to Kirtland he was ordained to the priesthood office of high priest and became a member of the Kirtland high council. In 1836, Granger was again asked by Smith to serve a mission; he worked mainly in New York with John P. Greene, establishing large branches of the church in Huntsburg and Perry.
And again, I say unto you, I remember my servant Oliver Granger; behold, verily I say unto him that his name shall be had in sacred remembrance from generation to generation, forever and ever, saith the Lord. Therefore, let him contend earnestly for the redemption of the First Presidency of my Church, saith the Lord; and when he falls he shall rise again, for his sacrifice shall be more sacred unto me than his increase, saith the Lord. Therefore, let him come up hither speedily, unto the land of Zion; and in the due time he shall be made a merchant unto my name, saith the Lord, for the benefit of my people. Therefore let no man despise my servant Oliver Granger, but let the blessings of my people be on him forever and ever.
Granger performed this assignment with such satisfaction to the creditors involved that one of them wrote: “Oliver Granger’s management in the arrangement of the unfinished business of people that have moved to the Far West, in redeeming their pledges and thereby sustaining their integrity, has been truly praiseworthy, and has entitled him to my highest esteem, and every grateful recollection.” However, Granger was largely unsuccessful in selling the church's property, and most of it would eventually fall into the hands of others who would never pay the church any remuneration.
Granger remained in Kirtland until his death in 1841 at the age of 49. Even though there were few Latter Day Saints in the area at the time, his funeral was attended "by a vast concourse of people" from Kirtland and neighboring towns.
"Detractors ... imply that the Doctrine and Covenants says everyone will remember him. That is not what the revelation says. As long as we have the Doctrine and Covenants, Oliver Granger's name will be there, and therefore this declaration is fulfilled. The Bible student will find an interesting parallel in Matt. 26:13. Here the Savior states that wherever the gospel is preached, the act of the woman anointing him will be as a memorial to her. Last time the gospel was preached, did anyone tell the story about this woman? Not likely. But this doesn't detract from the truthfulness of the statement in the Bible any more than it would have regarding the Doctrine and Covenants, if that had been what D & C 117 had said. Her act was preserved in the Bible, and therefore this prophecy is fulfilled.