What of the guards? Weren't there guards at the tomb who would have seen the resurrection? Only Matthew mentions guards. In his account the guards are there, Mary Magdalene and the other Mary arrive at the tomb, and an angel comes down, rolls the stone away, but the tomb is empty. Matthew was writing his gospel to a group of Christians who had been Jewish and he writes with this audience in mind.
MT 28:11-15 "While the women went on their way, some of the soldiers guarding the tomb went back to the city and told the chief priests everything that had happened. The chief priests met with the elders and made their plan; they gave a large sum of money to the soldiers and said, `You are to day that this disciples came during the night and stole his body while you were asleep. And if the Governor should hear of this, we will convince him that you are innocent, and you will have nothing to worry about.' The guards took the money and did what they were told to do. And so that is the report spread around by the Jews to this very day."