Let's get this story straight; Jesus and his disciples were making their way to the town of Capernaum, and as they were walking along three things happened: First, Jesus told his disciples that things were going to go downhill in a big hurry, that he would be betrayed, killed, but three days later, he would rise again. That's the first thing that happened.
The second thing that was going on was that the disciples didn't understand what in the world he meant, and they were afraid to ask him. It makes sense. They had been with Jesus for some time now and still there were occasions when he seemed to be speaking a different language. They weren't able to grasp what he was trying to teach them. And, probably, they were also scared a bit about what betrayal and killing and rising might mean for…