Contradiction with Mark 16:5
Matthew 28:3 describes the angel's appearance as being like lightning and clothing as white as snow, whereas Mark 16:5 describes a young man sitting in a white robe, offering a different visual imagery.
Mark 16:5: And entering into the sepulchre, they saw a young man sitting on the right side, clothed in a long white garment; and they were affrighted.
Contradiction with Luke 24:4
Matthew 28:3 depicts a single angel with a vivid appearance, while Luke 24:4 mentions two men in dazzling apparel, suggesting a different number and possibly appearance of heavenly beings.
Luke 24:4: And it came to pass, as they were much perplexed thereabout, behold, two men stood by them in shining garments:
Contradiction with John 20:12
Matthew 28:3 mentions an angel with an appearance like lightning, standing outside the tomb, but John 20:12 describes two angels in white seated where Jesus' body had been, differing in both number and position.
John 20:12: And seeth two angels in white sitting, the one at the head, and the other at the feet, where the body of Jesus had lain.