The apostles did not understand what Jesus was talking about. They could not understand, because the meaning of what he said was hidden from them.
The disciples did not understand what Jesus meant, and they were afraid to ask.
They will beat him and kill him, but three days later he will rise to life.
But they did not understand what he meant.
Then Jesus asked the two disciples, “Why can't you understand? How can you be so slow to believe all that the prophets said?
Then he helped them understand the Scriptures.
But the disciples did not know what he meant. The meaning was hidden from them. They could not understand it, and they were afraid to ask.
Jesus told the people this story. But they did not understand what he was talking about.
At first, Jesus' disciples did not understand. But after he had been given his glory, they remembered all this. Everything had happened exactly as the Scriptures said it would.