Mk 9, 9-13 What rising from the dead meant

(Mk 9, 9-13) What rising from the dead meant

[9] As they were coming down from the mountain, he charged them not to relate what they had seen to anyone, except when the Son of Man had risen from the dead. [10] So they kept the matter to themselves, questioning what rising from the dead meant. [11] Then they asked him, "Why do the scribes say that Elijah must come first?" [12] He told them, "Elijah will indeed come first and restore all things, yet how is it written regarding the Son of Man that he must suffer greatly and be treated with contempt? [13] But I tell you that Elijah has come and they did to him whatever they pleased, as it is written of him."

(CCC 649) As for the Son, he effects his own Resurrection by virtue of his divine power. Jesus announces that the Son of man will have to suffer much, die, and then rise (Cf. Mk 8:31; 9:9-31; 10:34). Elsewhere he affirms explicitly: "I lay down my life, that I may take it again…. I have power to lay it down, and I have power to take it again" (Jn 10:17-18). "We believe that Jesus died and rose again" (1 Thess 4:14).