He learned that people could be baptized in the temple for those who had died. Before this, people thought that those who died without being baptized could not go to heaven.
The Saints rejoiced. Now they knew that their loved ones could go to heaven!
Joseph Smith also learned that people could be sealed to their families in the temple. Before this, people didn’t know that they could be with their families after they died.
The Saints were so happy. Now they knew that their families could be together forever!