I can't believe that Jesus existed as a real person because his character with all his miraculous accomplishments had already existed as attributes of earlier "god-men".
Nevertheless I would then answer your question by recognising these fantasy miracles were spoken of to convince the gullible that "Jesus is your man!" not Mithra or Dionysus, Attis or a dozen other god-men. So come along and get free food at the local Jesus- cult temple and we'll all worship together and get saved.
A couple of thousand years earlier Horus walked on water as the sun god 'walks' on water when low on the horizon in the morning. And Horus also raised his friend Lazarus!