Luke 24:25

Jesus said to them, "O foolish ones, and slow of heart to believe in all that the prophets have spoken!" And beginning at Moses and all the prophets, He expounded to them in all the Scriptures the things concerning Himself.

The Emmaus disciples had just told Jesus this fellow the events of the weekend, how the women couldn't find His body, how the women said they saw angels who'd said He was alive, how Peter and John went to the tomb and found exactly what the women had said.

And then Jesus says they are slow to believe in all that the prophets have spoken. I'd always thought He was saying, "Why didn't you believe the women? Why didn't you believe the angels? Why didn't you believe the evidence?" But that wasn't what He said. It was "Why didn't you believe the Old Testament?"

Here we've got an empty tomb. And angels passing along messages. And an ecstatic Mary who got to hug Jesus that morning, and then have the men think she was nutso. And Jesus doesn't say, "Why didn't you believe them?" No. It was "Why didn't you believe what Moses said? what David said? what Isaiah said?"