“But they understood not this saying, and it was hid from them, that they perceived it not: and they feared to ask him of that saying.”
Luke 9:45 — Greek Interlinear
Church Fathers on Luke 9:45
Every thing that Jesus did claimed admiration from all men for a peculiar and divine light reflected upon each; of His works, according to the Psalms, honor and majesty will you lay upon him. Although all indeed man marveled at those things which He did, He however addresses what follows, not to all, but to His disciples; as it is said, But while they wondered every one, &c. He had shown His glory on the mount to His disciples, and after this delivered a man from an evil…
While all thus were wondering at the miracles, He foretell His passion. For miracles do not save, but the cross conveys the benefit. Hence he adds, For the Son of man shall be delivered into the hands of men.
But it is not clearly expressed by whom He is to be delivered, for one says, that He is to be delivered up by Judas, another by the devil; but Paul says, that God the Father delivered Him up for us all; but Judas, as he delivered Him up for money, did it traitorously, the Father for His mercies’ sake.