Mark 9:9-10

9While they were walking down the mountain, Jesus said to the three disciples, ‘You must not tell anyone now about the things that you have just seen. One day the Son of Man will become alive again after his death. Then you can tell people about these things.’

10The three disciples kept these words secret. But they talked together about the words, ‘become alive again after his death’. They asked each other, ‘What does this mean?’