Jesus’ tomb is empty; it’s an established historical fact. All the attacks on Jesus’ resurrection come in the form of trying to explain the vacant grave. They do this because they cannot deny the reality that His body was missing from His tomb.
However, no one has ever been able to come up with a credible explanation for Christ's empty grave. Jesus is indeed alive!
The resurrection matters so much to our faith because if Jesus did not walk bodily out of His grave, if His body was buried somewhere else in ancient Israel, then humanity has absolutely no hope.