So, Jesus was dead. In fact, they stabbed him with a sword just to make sure. A Jewish leader kindly let Jesus be buried in his family tomb- I don't know where he would have been buried otherwise, but I doubt it would be pleasant.
The tomb was sealed and two soldiers were placed on guard. A fully healthy man would have had difficulty getting out, let alone a dead one.
But the stone would be removed. Clearly you're not dealing with any ordinary man.
Jesus: fully human and fully divine. Omnipotent, omniscient and now, in the Holy Spirit, omnipresent.
There's more awesome to come.