Luke 9:43-45 NIV

[43] And they were all amazed at the greatness of God. While everyone was marveling at all that Jesus did, he said to his disciples, [44] “Listen carefully to what I am about to tell you: The Son of Man is going to be delivered into the hands of men.” [45] But they did not understand what this meant. It was hidden from them, so that they did not grasp it, and they were afraid to ask him about it.