1 Corinthians 15:4
And that he was buried, and that he rose again the third day according to the scriptures:
Note 10 at 1Co 15:4: The resurrection of Jesus sets Christianity completely apart from every other religion of the world (see note 8 at 1Co 15:3). The founders of every other religion have died and are still buried (see note 3 at Mr 16:6), but Jesus is alive from the dead. His tomb is empty.
There have been countless religious leaders who claimed to show the way to God, but where's their proof that they were right? Jesus provided us with the ultimate verification of His authority: He arose from the dead.