Mark 9:28-32

When He came into the house, His disciples began asking Him privately, “Why is it that we could not cast it out?”

And He said to them, “This kind cannot come out by anything except prayer.” Death and Resurrection Foretold

And from there they went out and began to go through Galilee, and He did not want anyone to know about it.

For He was teaching His disciples and telling them, “The Son of Man is to be handed over to men, and they will kill Him; and when He has been killed, He will rise three days later.”

But they did not understand this statement, and they were afraid to ask Him.