In Luke 9, there is an interesting tidbit that’s not in any of the other gospels.
A section in verse 31 in particular (NIV):
30Two men, Moses and Elijah, 31appeared in glorious splendor, talking with Jesus. They spoke about his departure, which he was about to bring to fulfillment at Jerusalem.
The other gospels only say that they spoke, not what about. According to Luke though, Jesus actually spoke with Moses and Elijah about his departure, or in the King James Version it says, about his decease.
I’ve always been curious about that.