https://www.biblegateway.com/passage/?search=Matthew+28
https://www.biblegateway.com/passage/?search=Mark+16&version=NIV
https://www.biblegateway.com/passage/?search=Luke+24&version=NIV
https://www.biblegateway.com/passage/?search=John+20&version=NIV
If you read it looks like Matthew and Mark are saying there is one angel inside and was sitting. Luke says two men or angels and they were standing and John makes no mention of men in the tomb or sitting or standing. It just says Mary Magdalene went in and then run out to call Simon.
This looks like a contradiction but maybe one of you can clear it up. Answer it yourselves if you can and don't link me to a website. I want to know what you think.
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Considering these are different accounts from different people. It's no different than if three people went fishing and saw a shark. They could all be so shocked that they each describe the shark differently.